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Finding the Fourth Proportional to 608,793.60, 911,878.20 and 542,308.80

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Solution

The fourth proportional to 608,793.60, 911,878.20 and 542,308.80 is: 812,294.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,793.60 : 911,878.20 = 542,308.80 : x
  2. Step 2: Convert to fraction form
    608,793.60/911,878.20 = 542,308.80/x
  3. Step 3: Cross multiply
    608,793.60x = 911,878.20 × 542,308.80
  4. Step 4: Simplify right side
    608,793.60x = 494,519,572,388.16
  5. Step 5: Solve for x
    x = 494,519,572,388.16/608,793.60
  6. Step 6: Final answer
    x = 812,294.30

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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.