Home / 885,850.38-1,328,987.21-286,812.18

Finding the Fourth Proportional to 885,850.38, 1,328,987.21 and 286,812.18

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Solution

The fourth proportional to 885,850.38, 1,328,987.21 and 286,812.18 is: 430,286.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,850.38 : 1,328,987.21 = 286,812.18 : x
  2. Step 2: Convert to fraction form
    885,850.38/1,328,987.21 = 286,812.18/x
  3. Step 3: Cross multiply
    885,850.38x = 1,328,987.21 × 286,812.18
  4. Step 4: Simplify right side
    885,850.38x = 381,169,717,458.16
  5. Step 5: Solve for x
    x = 381,169,717,458.16/885,850.38
  6. Step 6: Final answer
    x = 430,286.79

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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.