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Finding the Fourth Proportional to 485,133.80, 727,700.70 and 433,812.20

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Solution

The fourth proportional to 485,133.80, 727,700.70 and 433,812.20 is: 650,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,133.80 : 727,700.70 = 433,812.20 : x
  2. Step 2: Convert to fraction form
    485,133.80/727,700.70 = 433,812.20/x
  3. Step 3: Cross multiply
    485,133.80x = 727,700.70 × 433,812.20
  4. Step 4: Simplify right side
    485,133.80x = 315,685,441,608.54
  5. Step 5: Solve for x
    x = 315,685,441,608.54/485,133.80
  6. Step 6: Final answer
    x = 650,718.30

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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.