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Finding the Fourth Proportional to 712,868,760.90, 1,069,492,098.15 and 252,758,952.90

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Solution

The fourth proportional to 712,868,760.90, 1,069,492,098.15 and 252,758,952.90 is: 379,205,426.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,868,760.90 : 1,069,492,098.15 = 252,758,952.90 : x
  2. Step 2: Convert to fraction form
    712,868,760.90/1,069,492,098.15 = 252,758,952.90/x
  3. Step 3: Cross multiply
    712,868,760.90x = 1,069,492,098.15 × 252,758,952.90
  4. Step 4: Simplify right side
    712,868,760.90x = 270,323,702,863,218,016
  5. Step 5: Solve for x
    x = 270,323,702,863,218,016/712,868,760.90
  6. Step 6: Final answer
    x = 379,205,426.99

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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.