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Finding the Fourth Proportional to 637,781,765.76, 880,138,829.88 and 344,426,333.76

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Solution

The fourth proportional to 637,781,765.76, 880,138,829.88 and 344,426,333.76 is: 475,308,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,781,765.76 : 880,138,829.88 = 344,426,333.76 : x
  2. Step 2: Convert to fraction form
    637,781,765.76/880,138,829.88 = 344,426,333.76/x
  3. Step 3: Cross multiply
    637,781,765.76x = 880,138,829.88 × 344,426,333.76
  4. Step 4: Simplify right side
    637,781,765.76x = 303,142,990,375,384,704
  5. Step 5: Solve for x
    x = 303,142,990,375,384,704/637,781,765.76
  6. Step 6: Final answer
    x = 475,308,336.88

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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.