Home / 724,347.10-1,086,520.65-325,000.90

Finding the Fourth Proportional to 724,347.10, 1,086,520.65 and 325,000.90

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Solution

The fourth proportional to 724,347.10, 1,086,520.65 and 325,000.90 is: 487,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,347.10 : 1,086,520.65 = 325,000.90 : x
  2. Step 2: Convert to fraction form
    724,347.10/1,086,520.65 = 325,000.90/x
  3. Step 3: Cross multiply
    724,347.10x = 1,086,520.65 × 325,000.90
  4. Step 4: Simplify right side
    724,347.10x = 353,120,189,118.59
  5. Step 5: Solve for x
    x = 353,120,189,118.59/724,347.10
  6. Step 6: Final answer
    x = 487,501.35

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Half scale
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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.