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Finding the Fourth Proportional to 502,659,007.70, 753,988,511.55 and 347,690,812.10

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Solution

The fourth proportional to 502,659,007.70, 753,988,511.55 and 347,690,812.10 is: 521,536,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,659,007.70 : 753,988,511.55 = 347,690,812.10 : x
  2. Step 2: Convert to fraction form
    502,659,007.70/753,988,511.55 = 347,690,812.10/x
  3. Step 3: Cross multiply
    502,659,007.70x = 753,988,511.55 × 347,690,812.10
  4. Step 4: Simplify right side
    502,659,007.70x = 262,154,877,894,889,728
  5. Step 5: Solve for x
    x = 262,154,877,894,889,728/502,659,007.70
  6. Step 6: Final answer
    x = 521,536,218.15

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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.