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Finding the Fourth Proportional to 632,638.80, 948,958.20 and 258,574.32

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Solution

The fourth proportional to 632,638.80, 948,958.20 and 258,574.32 is: 387,861.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    632,638.80 : 948,958.20 = 258,574.32 : x
  2. Step 2: Convert to fraction form
    632,638.80/948,958.20 = 258,574.32/x
  3. Step 3: Cross multiply
    632,638.80x = 948,958.20 × 258,574.32
  4. Step 4: Simplify right side
    632,638.80x = 245,376,221,273.42
  5. Step 5: Solve for x
    x = 245,376,221,273.42/632,638.80
  6. Step 6: Final answer
    x = 387,861.48

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Similar ratio
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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.