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Finding the Fourth Proportional to 542,487.60, 811,427.40 and 486,730.80

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Solution

The fourth proportional to 542,487.60, 811,427.40 and 486,730.80 is: 728,029.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,487.60 : 811,427.40 = 486,730.80 : x
  2. Step 2: Convert to fraction form
    542,487.60/811,427.40 = 486,730.80/x
  3. Step 3: Cross multiply
    542,487.60x = 811,427.40 × 486,730.80
  4. Step 4: Simplify right side
    542,487.60x = 394,946,707,543.92
  5. Step 5: Solve for x
    x = 394,946,707,543.92/542,487.60
  6. Step 6: Final answer
    x = 728,029.00

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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.