Home / 724,205.70-1,086,308.55-459,141.30

Finding the Fourth Proportional to 724,205.70, 1,086,308.55 and 459,141.30

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Solution

The fourth proportional to 724,205.70, 1,086,308.55 and 459,141.30 is: 688,711.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,205.70 : 1,086,308.55 = 459,141.30 : x
  2. Step 2: Convert to fraction form
    724,205.70/1,086,308.55 = 459,141.30/x
  3. Step 3: Cross multiply
    724,205.70x = 1,086,308.55 × 459,141.30
  4. Step 4: Simplify right side
    724,205.70x = 498,769,119,848.12
  5. Step 5: Solve for x
    x = 498,769,119,848.12/724,205.70
  6. Step 6: Final answer
    x = 688,711.95

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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.