Home / 858,349.30-1,286,422.35-479,269.30

Finding the Fourth Proportional to 858,349.30, 1,286,422.35 and 479,269.30

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Solution

The fourth proportional to 858,349.30, 1,286,422.35 and 479,269.30 is: 718,288.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,349.30 : 1,286,422.35 = 479,269.30 : x
  2. Step 2: Convert to fraction form
    858,349.30/1,286,422.35 = 479,269.30/x
  3. Step 3: Cross multiply
    858,349.30x = 1,286,422.35 × 479,269.30
  4. Step 4: Simplify right side
    858,349.30x = 616,542,739,188.86
  5. Step 5: Solve for x
    x = 616,542,739,188.86/858,349.30
  6. Step 6: Final answer
    x = 718,288.86

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Double scale
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1.5x scale

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.