Home / 485,006.40-727,509.60-298,123.20

Finding the Fourth Proportional to 485,006.40, 727,509.60 and 298,123.20

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Solution

The fourth proportional to 485,006.40, 727,509.60 and 298,123.20 is: 447,184.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,006.40 : 727,509.60 = 298,123.20 : x
  2. Step 2: Convert to fraction form
    485,006.40/727,509.60 = 298,123.20/x
  3. Step 3: Cross multiply
    485,006.40x = 727,509.60 × 298,123.20
  4. Step 4: Simplify right side
    485,006.40x = 216,887,489,982.72
  5. Step 5: Solve for x
    x = 216,887,489,982.72/485,006.40
  6. Step 6: Final answer
    x = 447,184.80

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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.