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Finding the Fourth Proportional to 658,515.20, 987,772.80 and 648,017.60

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Solution

The fourth proportional to 658,515.20, 987,772.80 and 648,017.60 is: 972,026.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,515.20 : 987,772.80 = 648,017.60 : x
  2. Step 2: Convert to fraction form
    658,515.20/987,772.80 = 648,017.60/x
  3. Step 3: Cross multiply
    658,515.20x = 987,772.80 × 648,017.60
  4. Step 4: Simplify right side
    658,515.20x = 640,094,159,201.28
  5. Step 5: Solve for x
    x = 640,094,159,201.28/658,515.20
  6. Step 6: Final answer
    x = 972,026.40

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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.