Home / 724,289.60-1,086,434.40-456,600.80

Finding the Fourth Proportional to 724,289.60, 1,086,434.40 and 456,600.80

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Solution

The fourth proportional to 724,289.60, 1,086,434.40 and 456,600.80 is: 684,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,289.60 : 1,086,434.40 = 456,600.80 : x
  2. Step 2: Convert to fraction form
    724,289.60/1,086,434.40 = 456,600.80/x
  3. Step 3: Cross multiply
    724,289.60x = 1,086,434.40 × 456,600.80
  4. Step 4: Simplify right side
    724,289.60x = 496,066,816,187.52
  5. Step 5: Solve for x
    x = 496,066,816,187.52/724,289.60
  6. Step 6: Final answer
    x = 684,901.20

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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.