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Finding the Fourth Proportional to 545,728.59, 747,651.78 and 525,274.54

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Solution

The fourth proportional to 545,728.59, 747,651.78 and 525,274.54 is: 719,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,728.59 : 747,651.78 = 525,274.54 : x
  2. Step 2: Convert to fraction form
    545,728.59/747,651.78 = 525,274.54/x
  3. Step 3: Cross multiply
    545,728.59x = 747,651.78 × 525,274.54
  4. Step 4: Simplify right side
    545,728.59x = 392,722,444,819.68
  5. Step 5: Solve for x
    x = 392,722,444,819.68/545,728.59
  6. Step 6: Final answer
    x = 719,629.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.