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Finding the Fourth Proportional to 615,519.92, 924,903.56 and 331,420.52

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Solution

The fourth proportional to 615,519.92, 924,903.56 and 331,420.52 is: 498,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,519.92 : 924,903.56 = 331,420.52 : x
  2. Step 2: Convert to fraction form
    615,519.92/924,903.56 = 331,420.52/x
  3. Step 3: Cross multiply
    615,519.92x = 924,903.56 × 331,420.52
  4. Step 4: Simplify right side
    615,519.92x = 306,532,018,805.05
  5. Step 5: Solve for x
    x = 306,532,018,805.05/615,519.92
  6. Step 6: Final answer
    x = 498,005.03

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1.5x scale

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.