Home / 858,767.40-1,288,151.10-438,863.40

Finding the Fourth Proportional to 858,767.40, 1,288,151.10 and 438,863.40

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Solution

The fourth proportional to 858,767.40, 1,288,151.10 and 438,863.40 is: 658,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,767.40 : 1,288,151.10 = 438,863.40 : x
  2. Step 2: Convert to fraction form
    858,767.40/1,288,151.10 = 438,863.40/x
  3. Step 3: Cross multiply
    858,767.40x = 1,288,151.10 × 438,863.40
  4. Step 4: Simplify right side
    858,767.40x = 565,322,371,459.74
  5. Step 5: Solve for x
    x = 565,322,371,459.74/858,767.40
  6. Step 6: Final answer
    x = 658,295.10

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Double scale
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Similar ratio
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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.