Home / 724,858.80-1,087,288.20-538,234.80

Finding the Fourth Proportional to 724,858.80, 1,087,288.20 and 538,234.80

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Solution

The fourth proportional to 724,858.80, 1,087,288.20 and 538,234.80 is: 807,352.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,858.80 : 1,087,288.20 = 538,234.80 : x
  2. Step 2: Convert to fraction form
    724,858.80/1,087,288.20 = 538,234.80/x
  3. Step 3: Cross multiply
    724,858.80x = 1,087,288.20 × 538,234.80
  4. Step 4: Simplify right side
    724,858.80x = 585,216,346,869.36
  5. Step 5: Solve for x
    x = 585,216,346,869.36/724,858.80
  6. Step 6: Final answer
    x = 807,352.20

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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.