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Finding the Fourth Proportional to 485,040.90, 727,690.95 and 432,812.10

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Solution

The fourth proportional to 485,040.90, 727,690.95 and 432,812.10 is: 649,333.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,040.90 : 727,690.95 = 432,812.10 : x
  2. Step 2: Convert to fraction form
    485,040.90/727,690.95 = 432,812.10/x
  3. Step 3: Cross multiply
    485,040.90x = 727,690.95 × 432,812.10
  4. Step 4: Simplify right side
    485,040.90x = 314,953,448,220.50
  5. Step 5: Solve for x
    x = 314,953,448,220.50/485,040.90
  6. Step 6: Final answer
    x = 649,333.79

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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.