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Finding the Fourth Proportional to 587,415.40, 881,123.10 and 272,487.40

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Solution

The fourth proportional to 587,415.40, 881,123.10 and 272,487.40 is: 408,731.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,415.40 : 881,123.10 = 272,487.40 : x
  2. Step 2: Convert to fraction form
    587,415.40/881,123.10 = 272,487.40/x
  3. Step 3: Cross multiply
    587,415.40x = 881,123.10 × 272,487.40
  4. Step 4: Simplify right side
    587,415.40x = 240,094,942,598.94
  5. Step 5: Solve for x
    x = 240,094,942,598.94/587,415.40
  6. Step 6: Final answer
    x = 408,731.10

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Double scale
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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.