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Finding the Fourth Proportional to 615,581.40, 924,149.70 and 331,498.20

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Solution

The fourth proportional to 615,581.40, 924,149.70 and 331,498.20 is: 497,666.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,581.40 : 924,149.70 = 331,498.20 : x
  2. Step 2: Convert to fraction form
    615,581.40/924,149.70 = 331,498.20/x
  3. Step 3: Cross multiply
    615,581.40x = 924,149.70 × 331,498.20
  4. Step 4: Simplify right side
    615,581.40x = 306,353,962,080.54
  5. Step 5: Solve for x
    x = 306,353,962,080.54/615,581.40
  6. Step 6: Final answer
    x = 497,666.05

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Double scale
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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.