Home / 1,310,651,249.72-1,808,704,889.26-715,943,984.72

Finding the Fourth Proportional to 1,310,651,249.72, 1,808,704,889.26 and 715,943,984.72

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Solution

The fourth proportional to 1,310,651,249.72, 1,808,704,889.26 and 715,943,984.72 is: 988,006,066.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310,651,249.72 : 1,808,704,889.26 = 715,943,984.72 : x
  2. Step 2: Convert to fraction form
    1,310,651,249.72/1,808,704,889.26 = 715,943,984.72/x
  3. Step 3: Cross multiply
    1,310,651,249.72x = 1,808,704,889.26 × 715,943,984.72
  4. Step 4: Simplify right side
    1,310,651,249.72x = 1,294,931,385,588,517,376
  5. Step 5: Solve for x
    x = 1,294,931,385,588,517,376/1,310,651,249.72
  6. Step 6: Final answer
    x = 988,006,066.35

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Double scale
Find fourth proportional to 1,310,651,250.72, 1,808,704,890.64 and 715,943,985.72
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.