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Finding the Fourth Proportional to 608,438.70, 912,658.05 and 395,862.30

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Solution

The fourth proportional to 608,438.70, 912,658.05 and 395,862.30 is: 593,793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,438.70 : 912,658.05 = 395,862.30 : x
  2. Step 2: Convert to fraction form
    608,438.70/912,658.05 = 395,862.30/x
  3. Step 3: Cross multiply
    608,438.70x = 912,658.05 × 395,862.30
  4. Step 4: Simplify right side
    608,438.70x = 361,286,914,786.52
  5. Step 5: Solve for x
    x = 361,286,914,786.52/608,438.70
  6. Step 6: Final answer
    x = 593,793.45

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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.