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Finding the Fourth Proportional to 658,468.80, 987,703.20 and 446,961.60

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Solution

The fourth proportional to 658,468.80, 987,703.20 and 446,961.60 is: 670,442.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,468.80 : 987,703.20 = 446,961.60 : x
  2. Step 2: Convert to fraction form
    658,468.80/987,703.20 = 446,961.60/x
  3. Step 3: Cross multiply
    658,468.80x = 987,703.20 × 446,961.60
  4. Step 4: Simplify right side
    658,468.80x = 441,465,402,597.12
  5. Step 5: Solve for x
    x = 441,465,402,597.12/658,468.80
  6. Step 6: Final answer
    x = 670,442.40

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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.