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Finding the Fourth Proportional to 615,558.35, 849,484.82 and 386,125.31

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Solution

The fourth proportional to 615,558.35, 849,484.82 and 386,125.31 is: 532,861.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,558.35 : 849,484.82 = 386,125.31 : x
  2. Step 2: Convert to fraction form
    615,558.35/849,484.82 = 386,125.31/x
  3. Step 3: Cross multiply
    615,558.35x = 849,484.82 × 386,125.31
  4. Step 4: Simplify right side
    615,558.35x = 328,007,592,551.82
  5. Step 5: Solve for x
    x = 328,007,592,551.82/615,558.35
  6. Step 6: Final answer
    x = 532,861.90

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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.