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Finding the Fourth Proportional to 546,728.38, 819,427.69 and 386,850.38

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Solution

The fourth proportional to 546,728.38, 819,427.69 and 386,850.38 is: 579,805.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,728.38 : 819,427.69 = 386,850.38 : x
  2. Step 2: Convert to fraction form
    546,728.38/819,427.69 = 386,850.38/x
  3. Step 3: Cross multiply
    546,728.38x = 819,427.69 × 386,850.38
  4. Step 4: Simplify right side
    546,728.38x = 316,995,913,259.02
  5. Step 5: Solve for x
    x = 316,995,913,259.02/546,728.38
  6. Step 6: Final answer
    x = 579,805.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.