Home / 921,398.59-1,382,167.86-313,998.13

Finding the Fourth Proportional to 921,398.59, 1,382,167.86 and 313,998.13

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Solution

The fourth proportional to 921,398.59, 1,382,167.86 and 313,998.13 is: 471,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,398.59 : 1,382,167.86 = 313,998.13 : x
  2. Step 2: Convert to fraction form
    921,398.59/1,382,167.86 = 313,998.13/x
  3. Step 3: Cross multiply
    921,398.59x = 1,382,167.86 × 313,998.13
  4. Step 4: Simplify right side
    921,398.59x = 433,998,123,386.10
  5. Step 5: Solve for x
    x = 433,998,123,386.10/921,398.59
  6. Step 6: Final answer
    x = 471,021.04

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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.