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Finding the Fourth Proportional to 453,335.40, 680,003.10 and 320,475.15

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Solution

The fourth proportional to 453,335.40, 680,003.10 and 320,475.15 is: 480,712.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,335.40 : 680,003.10 = 320,475.15 : x
  2. Step 2: Convert to fraction form
    453,335.40/680,003.10 = 320,475.15/x
  3. Step 3: Cross multiply
    453,335.40x = 680,003.10 × 320,475.15
  4. Step 4: Simplify right side
    453,335.40x = 217,924,095,472.97
  5. Step 5: Solve for x
    x = 217,924,095,472.97/453,335.40
  6. Step 6: Final answer
    x = 480,712.73

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Similar ratio
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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.