Home / 724,543.80-1,086,815.70-556,387.80

Finding the Fourth Proportional to 724,543.80, 1,086,815.70 and 556,387.80

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Solution

The fourth proportional to 724,543.80, 1,086,815.70 and 556,387.80 is: 834,581.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,543.80 : 1,086,815.70 = 556,387.80 : x
  2. Step 2: Convert to fraction form
    724,543.80/1,086,815.70 = 556,387.80/x
  3. Step 3: Cross multiply
    724,543.80x = 1,086,815.70 × 556,387.80
  4. Step 4: Simplify right side
    724,543.80x = 604,690,996,328.46
  5. Step 5: Solve for x
    x = 604,690,996,328.46/724,543.80
  6. Step 6: Final answer
    x = 834,581.70

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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.