Home / 485,235.40-727,982.70-433,006.60

Finding the Fourth Proportional to 485,235.40, 727,982.70 and 433,006.60

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Solution

The fourth proportional to 485,235.40, 727,982.70 and 433,006.60 is: 649,625.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,235.40 : 727,982.70 = 433,006.60 : x
  2. Step 2: Convert to fraction form
    485,235.40/727,982.70 = 433,006.60/x
  3. Step 3: Cross multiply
    485,235.40x = 727,982.70 × 433,006.60
  4. Step 4: Simplify right side
    485,235.40x = 315,221,313,785.82
  5. Step 5: Solve for x
    x = 315,221,313,785.82/485,235.40
  6. Step 6: Final answer
    x = 649,625.55

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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.