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Finding the Fourth Proportional to 542,509.60, 811,460.40 and 486,752.80

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Solution

The fourth proportional to 542,509.60, 811,460.40 and 486,752.80 is: 728,062.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,509.60 : 811,460.40 = 486,752.80 : x
  2. Step 2: Convert to fraction form
    542,509.60/811,460.40 = 486,752.80/x
  3. Step 3: Cross multiply
    542,509.60x = 811,460.40 × 486,752.80
  4. Step 4: Simplify right side
    542,509.60x = 394,980,621,789.12
  5. Step 5: Solve for x
    x = 394,980,621,789.12/542,509.60
  6. Step 6: Final answer
    x = 728,062.00

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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.