Home / 929,189.28-1,393,821.72-442,621.30

Finding the Fourth Proportional to 929,189.28, 1,393,821.72 and 442,621.30

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Solution

The fourth proportional to 929,189.28, 1,393,821.72 and 442,621.30 is: 663,949.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    929,189.28 : 1,393,821.72 = 442,621.30 : x
  2. Step 2: Convert to fraction form
    929,189.28/1,393,821.72 = 442,621.30/x
  3. Step 3: Cross multiply
    929,189.28x = 1,393,821.72 × 442,621.30
  4. Step 4: Simplify right side
    929,189.28x = 616,935,181,674.64
  5. Step 5: Solve for x
    x = 616,935,181,674.64/929,189.28
  6. Step 6: Final answer
    x = 663,949.96

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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.