Home / 724,905.20-1,087,357.80-459,840.80

Finding the Fourth Proportional to 724,905.20, 1,087,357.80 and 459,840.80

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Solution

The fourth proportional to 724,905.20, 1,087,357.80 and 459,840.80 is: 689,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,905.20 : 1,087,357.80 = 459,840.80 : x
  2. Step 2: Convert to fraction form
    724,905.20/1,087,357.80 = 459,840.80/x
  3. Step 3: Cross multiply
    724,905.20x = 1,087,357.80 × 459,840.80
  4. Step 4: Simplify right side
    724,905.20x = 500,011,480,638.24
  5. Step 5: Solve for x
    x = 500,011,480,638.24/724,905.20
  6. Step 6: Final answer
    x = 689,761.20

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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.