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Finding the Fourth Proportional to 636,650,877.86, 878,569,212.24 and 358,191,737.06

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Solution

The fourth proportional to 636,650,877.86, 878,569,212.24 and 358,191,737.06 is: 494,299,534.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,650,877.86 : 878,569,212.24 = 358,191,737.06 : x
  2. Step 2: Convert to fraction form
    636,650,877.86/878,569,212.24 = 358,191,737.06/x
  3. Step 3: Cross multiply
    636,650,877.86x = 878,569,212.24 × 358,191,737.06
  4. Step 4: Simplify right side
    636,650,877.86x = 314,696,232,259,681,408
  5. Step 5: Solve for x
    x = 314,696,232,259,681,408/636,650,877.86
  6. Step 6: Final answer
    x = 494,299,534.02

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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.