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Finding the Fourth Proportional to 615,840.40, 924,067.80 and 349,805.20

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Solution

The fourth proportional to 615,840.40, 924,067.80 and 349,805.20 is: 524,882.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,840.40 : 924,067.80 = 349,805.20 : x
  2. Step 2: Convert to fraction form
    615,840.40/924,067.80 = 349,805.20/x
  3. Step 3: Cross multiply
    615,840.40x = 924,067.80 × 349,805.20
  4. Step 4: Simplify right side
    615,840.40x = 323,243,721,592.56
  5. Step 5: Solve for x
    x = 323,243,721,592.56/615,840.40
  6. Step 6: Final answer
    x = 524,882.29

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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.