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Finding the Fourth Proportional to 485,611.20, 728,589.60 and 468,331.20

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Solution

The fourth proportional to 485,611.20, 728,589.60 and 468,331.20 is: 702,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,611.20 : 728,589.60 = 468,331.20 : x
  2. Step 2: Convert to fraction form
    485,611.20/728,589.60 = 468,331.20/x
  3. Step 3: Cross multiply
    485,611.20x = 728,589.60 × 468,331.20
  4. Step 4: Simplify right side
    485,611.20x = 341,221,241,675.52
  5. Step 5: Solve for x
    x = 341,221,241,675.52/485,611.20
  6. Step 6: Final answer
    x = 702,663.45

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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.