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Finding the Fourth Proportional to 658,000.80, 987,260.40 and 258,573.60

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Solution

The fourth proportional to 658,000.80, 987,260.40 and 258,573.60 is: 387,962.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,000.80 : 987,260.40 = 258,573.60 : x
  2. Step 2: Convert to fraction form
    658,000.80/987,260.40 = 258,573.60/x
  3. Step 3: Cross multiply
    658,000.80x = 987,260.40 × 258,573.60
  4. Step 4: Simplify right side
    658,000.80x = 255,279,475,765.44
  5. Step 5: Solve for x
    x = 255,279,475,765.44/658,000.80
  6. Step 6: Final answer
    x = 387,962.26

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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.