Home / 1,325,697,878.40-1,988,696,116.80-405,566,908.80

Finding the Fourth Proportional to 1,325,697,878.40, 1,988,696,116.80 and 405,566,908.80

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Solution

The fourth proportional to 1,325,697,878.40, 1,988,696,116.80 and 405,566,908.80 is: 608,396,037.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,697,878.40 : 1,988,696,116.80 = 405,566,908.80 : x
  2. Step 2: Convert to fraction form
    1,325,697,878.40/1,988,696,116.80 = 405,566,908.80/x
  3. Step 3: Cross multiply
    1,325,697,878.40x = 1,988,696,116.80 × 405,566,908.80
  4. Step 4: Simplify right side
    1,325,697,878.40x = 806,549,336,633,139,712
  5. Step 5: Solve for x
    x = 806,549,336,633,139,712/1,325,697,878.40
  6. Step 6: Final answer
    x = 608,396,037.87

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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.