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Finding the Fourth Proportional to 545,124.20, 816,519.90 and 486,026.60

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Solution

The fourth proportional to 545,124.20, 816,519.90 and 486,026.60 is: 727,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,124.20 : 816,519.90 = 486,026.60 : x
  2. Step 2: Convert to fraction form
    545,124.20/816,519.90 = 486,026.60/x
  3. Step 3: Cross multiply
    545,124.20x = 816,519.90 × 486,026.60
  4. Step 4: Simplify right side
    545,124.20x = 396,850,390,829.34
  5. Step 5: Solve for x
    x = 396,850,390,829.34/545,124.20
  6. Step 6: Final answer
    x = 727,999.95

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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.