Home / 1,120,057.40-1,679,891.70-409,719.80

Finding the Fourth Proportional to 1,120,057.40, 1,679,891.70 and 409,719.80

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Solution

The fourth proportional to 1,120,057.40, 1,679,891.70 and 409,719.80 is: 614,508.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,057.40 : 1,679,891.70 = 409,719.80 : x
  2. Step 2: Convert to fraction form
    1,120,057.40/1,679,891.70 = 409,719.80/x
  3. Step 3: Cross multiply
    1,120,057.40x = 1,679,891.70 × 409,719.80
  4. Step 4: Simplify right side
    1,120,057.40x = 688,284,891,345.66
  5. Step 5: Solve for x
    x = 688,284,891,345.66/1,120,057.40
  6. Step 6: Final answer
    x = 614,508.59

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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.