Home / 1,120,421.12-1,679,844.36-410,356.88

Finding the Fourth Proportional to 1,120,421.12, 1,679,844.36 and 410,356.88

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Solution

The fourth proportional to 1,120,421.12, 1,679,844.36 and 410,356.88 is: 615,246.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,421.12 : 1,679,844.36 = 410,356.88 : x
  2. Step 2: Convert to fraction form
    1,120,421.12/1,679,844.36 = 410,356.88/x
  3. Step 3: Cross multiply
    1,120,421.12x = 1,679,844.36 × 410,356.88
  4. Step 4: Simplify right side
    1,120,421.12x = 689,335,690,455.20
  5. Step 5: Solve for x
    x = 689,335,690,455.20/1,120,421.12
  6. Step 6: Final answer
    x = 615,246.96

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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.