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Finding the Fourth Proportional to 668,737,342.69, 922,832,250.24 and 371,398,738.32

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Solution

The fourth proportional to 668,737,342.69, 922,832,250.24 and 371,398,738.32 is: 512,516,217.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,737,342.69 : 922,832,250.24 = 371,398,738.32 : x
  2. Step 2: Convert to fraction form
    668,737,342.69/922,832,250.24 = 371,398,738.32/x
  3. Step 3: Cross multiply
    668,737,342.69x = 922,832,250.24 × 371,398,738.32
  4. Step 4: Simplify right side
    668,737,342.69x = 342,738,733,420,142,528
  5. Step 5: Solve for x
    x = 342,738,733,420,142,528/668,737,342.69
  6. Step 6: Final answer
    x = 512,516,217.57

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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.