Home / 587,631.30-881,446.95-421,743.30

Finding the Fourth Proportional to 587,631.30, 881,446.95 and 421,743.30

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Solution

The fourth proportional to 587,631.30, 881,446.95 and 421,743.30 is: 632,614.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,631.30 : 881,446.95 = 421,743.30 : x
  2. Step 2: Convert to fraction form
    587,631.30/881,446.95 = 421,743.30/x
  3. Step 3: Cross multiply
    587,631.30x = 881,446.95 × 421,743.30
  4. Step 4: Simplify right side
    587,631.30x = 371,744,345,467.94
  5. Step 5: Solve for x
    x = 371,744,345,467.94/587,631.30
  6. Step 6: Final answer
    x = 632,614.95

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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.