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Finding the Fourth Proportional to 549,281.20, 823,230.60 and 487,073.20

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Solution

The fourth proportional to 549,281.20, 823,230.60 and 487,073.20 is: 729,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,281.20 : 823,230.60 = 487,073.20 : x
  2. Step 2: Convert to fraction form
    549,281.20/823,230.60 = 487,073.20/x
  3. Step 3: Cross multiply
    549,281.20x = 823,230.60 × 487,073.20
  4. Step 4: Simplify right side
    549,281.20x = 400,973,562,679.92
  5. Step 5: Solve for x
    x = 400,973,562,679.92/549,281.20
  6. Step 6: Final answer
    x = 729,996.88

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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.