Home / 1,329,701,954.90-1,994,552,932.35-640,954,418.90

Finding the Fourth Proportional to 1,329,701,954.90, 1,994,552,932.35 and 640,954,418.90

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Solution

The fourth proportional to 1,329,701,954.90, 1,994,552,932.35 and 640,954,418.90 is: 961,431,628.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,701,954.90 : 1,994,552,932.35 = 640,954,418.90 : x
  2. Step 2: Convert to fraction form
    1,329,701,954.90/1,994,552,932.35 = 640,954,418.90/x
  3. Step 3: Cross multiply
    1,329,701,954.90x = 1,994,552,932.35 × 640,954,418.90
  4. Step 4: Simplify right side
    1,329,701,954.90x = 1,278,417,515,719,685,120
  5. Step 5: Solve for x
    x = 1,278,417,515,719,685,120/1,329,701,954.90
  6. Step 6: Final answer
    x = 961,431,628.35

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Half scale
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Double scale
Find fourth proportional to 1,329,701,955.90, 1,994,552,933.85 and 640,954,419.90
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.