Home / 811,972.80-1,120,499.28-449,411.52

Finding the Fourth Proportional to 811,972.80, 1,120,499.28 and 449,411.52

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Solution

The fourth proportional to 811,972.80, 1,120,499.28 and 449,411.52 is: 620,175.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,972.80 : 1,120,499.28 = 449,411.52 : x
  2. Step 2: Convert to fraction form
    811,972.80/1,120,499.28 = 449,411.52/x
  3. Step 3: Cross multiply
    811,972.80x = 1,120,499.28 × 449,411.52
  4. Step 4: Simplify right side
    811,972.80x = 503,565,284,583.71
  5. Step 5: Solve for x
    x = 503,565,284,583.71/811,972.80
  6. Step 6: Final answer
    x = 620,175.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.