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Finding the Fourth Proportional to 545,301.20, 817,951.80 and 485,166.80

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Solution

The fourth proportional to 545,301.20, 817,951.80 and 485,166.80 is: 727,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,301.20 : 817,951.80 = 485,166.80 : x
  2. Step 2: Convert to fraction form
    545,301.20/817,951.80 = 485,166.80/x
  3. Step 3: Cross multiply
    545,301.20x = 817,951.80 × 485,166.80
  4. Step 4: Simplify right side
    545,301.20x = 396,843,057,360.24
  5. Step 5: Solve for x
    x = 396,843,057,360.24/545,301.20
  6. Step 6: Final answer
    x = 727,750.20

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1.5x scale

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.