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Finding the Fourth Proportional to 647,035.20, 970,552.80 and 458,078.40

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Solution

The fourth proportional to 647,035.20, 970,552.80 and 458,078.40 is: 687,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,035.20 : 970,552.80 = 458,078.40 : x
  2. Step 2: Convert to fraction form
    647,035.20/970,552.80 = 458,078.40/x
  3. Step 3: Cross multiply
    647,035.20x = 970,552.80 × 458,078.40
  4. Step 4: Simplify right side
    647,035.20x = 444,589,273,739.52
  5. Step 5: Solve for x
    x = 444,589,273,739.52/647,035.20
  6. Step 6: Final answer
    x = 687,117.60

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Similar ratio
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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.