Home / 485,039.40-727,688.70-432,810.60

Finding the Fourth Proportional to 485,039.40, 727,688.70 and 432,810.60

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Solution

The fourth proportional to 485,039.40, 727,688.70 and 432,810.60 is: 649,331.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,039.40 : 727,688.70 = 432,810.60 : x
  2. Step 2: Convert to fraction form
    485,039.40/727,688.70 = 432,810.60/x
  3. Step 3: Cross multiply
    485,039.40x = 727,688.70 × 432,810.60
  4. Step 4: Simplify right side
    485,039.40x = 314,951,382,860.22
  5. Step 5: Solve for x
    x = 314,951,382,860.22/485,039.40
  6. Step 6: Final answer
    x = 649,331.54

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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.