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Finding the Fourth Proportional to 658,200.30, 987,300.45 and 613,913.55

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Solution

The fourth proportional to 658,200.30, 987,300.45 and 613,913.55 is: 920,870.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,200.30 : 987,300.45 = 613,913.55 : x
  2. Step 2: Convert to fraction form
    658,200.30/987,300.45 = 613,913.55/x
  3. Step 3: Cross multiply
    658,200.30x = 987,300.45 × 613,913.55
  4. Step 4: Simplify right side
    658,200.30x = 606,117,124,176.10
  5. Step 5: Solve for x
    x = 606,117,124,176.10/658,200.30
  6. Step 6: Final answer
    x = 920,870.33

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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.