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Finding the Fourth Proportional to 615,575.40, 924,140.70 and 331,492.20

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Solution

The fourth proportional to 615,575.40, 924,140.70 and 331,492.20 is: 497,657.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,575.40 : 924,140.70 = 331,492.20 : x
  2. Step 2: Convert to fraction form
    615,575.40/924,140.70 = 331,492.20/x
  3. Step 3: Cross multiply
    615,575.40x = 924,140.70 × 331,492.20
  4. Step 4: Simplify right side
    615,575.40x = 306,345,433,752.54
  5. Step 5: Solve for x
    x = 306,345,433,752.54/615,575.40
  6. Step 6: Final answer
    x = 497,657.04

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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.