Home / 724,140.70-1,086,211.05-459,076.30

Finding the Fourth Proportional to 724,140.70, 1,086,211.05 and 459,076.30

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Solution

The fourth proportional to 724,140.70, 1,086,211.05 and 459,076.30 is: 688,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,140.70 : 1,086,211.05 = 459,076.30 : x
  2. Step 2: Convert to fraction form
    724,140.70/1,086,211.05 = 459,076.30/x
  3. Step 3: Cross multiply
    724,140.70x = 1,086,211.05 × 459,076.30
  4. Step 4: Simplify right side
    724,140.70x = 498,653,749,853.12
  5. Step 5: Solve for x
    x = 498,653,749,853.12/724,140.70
  6. Step 6: Final answer
    x = 688,614.45

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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.