Home / 1,119,619.20-1,679,428.80-320,853.90

Finding the Fourth Proportional to 1,119,619.20, 1,679,428.80 and 320,853.90

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Solution

The fourth proportional to 1,119,619.20, 1,679,428.80 and 320,853.90 is: 481,280.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,619.20 : 1,679,428.80 = 320,853.90 : x
  2. Step 2: Convert to fraction form
    1,119,619.20/1,679,428.80 = 320,853.90/x
  3. Step 3: Cross multiply
    1,119,619.20x = 1,679,428.80 × 320,853.90
  4. Step 4: Simplify right side
    1,119,619.20x = 538,851,280,252.32
  5. Step 5: Solve for x
    x = 538,851,280,252.32/1,119,619.20
  6. Step 6: Final answer
    x = 481,280.85

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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.