Home / 724,443.21-1,086,221.73-345,479.85

Finding the Fourth Proportional to 724,443.21, 1,086,221.73 and 345,479.85

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Solution

The fourth proportional to 724,443.21, 1,086,221.73 and 345,479.85 is: 518,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,443.21 : 1,086,221.73 = 345,479.85 : x
  2. Step 2: Convert to fraction form
    724,443.21/1,086,221.73 = 345,479.85/x
  3. Step 3: Cross multiply
    724,443.21x = 1,086,221.73 × 345,479.85
  4. Step 4: Simplify right side
    724,443.21x = 375,267,721,642.69
  5. Step 5: Solve for x
    x = 375,267,721,642.69/724,443.21
  6. Step 6: Final answer
    x = 518,008.47

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Double scale
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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.