Home / 485,297.10-727,281.09-307,928.70

Finding the Fourth Proportional to 485,297.10, 727,281.09 and 307,928.70

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Solution

The fourth proportional to 485,297.10, 727,281.09 and 307,928.70 is: 461,471.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,297.10 : 727,281.09 = 307,928.70 : x
  2. Step 2: Convert to fraction form
    485,297.10/727,281.09 = 307,928.70/x
  3. Step 3: Cross multiply
    485,297.10x = 727,281.09 × 307,928.70
  4. Step 4: Simplify right side
    485,297.10x = 223,950,720,578.28
  5. Step 5: Solve for x
    x = 223,950,720,578.28/485,297.10
  6. Step 6: Final answer
    x = 461,471.38

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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.