Home / 545,125.20-816,521.40-486,027.60

Finding the Fourth Proportional to 545,125.20, 816,521.40 and 486,027.60

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Solution

The fourth proportional to 545,125.20, 816,521.40 and 486,027.60 is: 728,001.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,125.20 : 816,521.40 = 486,027.60 : x
  2. Step 2: Convert to fraction form
    545,125.20/816,521.40 = 486,027.60/x
  3. Step 3: Cross multiply
    545,125.20x = 816,521.40 × 486,027.60
  4. Step 4: Simplify right side
    545,125.20x = 396,851,936,390.64
  5. Step 5: Solve for x
    x = 396,851,936,390.64/545,125.20
  6. Step 6: Final answer
    x = 728,001.45

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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.