Home / 890,281.28-1,228,589.40-482,387.54

Finding the Fourth Proportional to 890,281.28, 1,228,589.40 and 482,387.54

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Solution

The fourth proportional to 890,281.28, 1,228,589.40 and 482,387.54 is: 665,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,281.28 : 1,228,589.40 = 482,387.54 : x
  2. Step 2: Convert to fraction form
    890,281.28/1,228,589.40 = 482,387.54/x
  3. Step 3: Cross multiply
    890,281.28x = 1,228,589.40 × 482,387.54
  4. Step 4: Simplify right side
    890,281.28x = 592,656,218,336.08
  5. Step 5: Solve for x
    x = 592,656,218,336.08/890,281.28
  6. Step 6: Final answer
    x = 665,695.47

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Double scale
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1.5x scale

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.