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Finding the Fourth Proportional to 637,767, 880,054.57 and 392,712.47

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Solution

The fourth proportional to 637,767, 880,054.57 and 392,712.47 is: 541,903.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,767 : 880,054.57 = 392,712.47 : x
  2. Step 2: Convert to fraction form
    637,767/880,054.57 = 392,712.47/x
  3. Step 3: Cross multiply
    637,767x = 880,054.57 × 392,712.47
  4. Step 4: Simplify right side
    637,767x = 345,608,403,310.31
  5. Step 5: Solve for x
    x = 345,608,403,310.31/637,767
  6. Step 6: Final answer
    x = 541,903.87

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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.