Home / 530,396.52-731,965.20-288,687.86

Finding the Fourth Proportional to 530,396.52, 731,965.20 and 288,687.86

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Solution

The fourth proportional to 530,396.52, 731,965.20 and 288,687.86 is: 398,399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,396.52 : 731,965.20 = 288,687.86 : x
  2. Step 2: Convert to fraction form
    530,396.52/731,965.20 = 288,687.86/x
  3. Step 3: Cross multiply
    530,396.52x = 731,965.20 × 288,687.86
  4. Step 4: Simplify right side
    530,396.52x = 211,309,467,182.47
  5. Step 5: Solve for x
    x = 211,309,467,182.47/530,396.52
  6. Step 6: Final answer
    x = 398,399.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.