Home / 690,897.57-1,036,346.34-269,878.20

Finding the Fourth Proportional to 690,897.57, 1,036,346.34 and 269,878.20

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Solution

The fourth proportional to 690,897.57, 1,036,346.34 and 269,878.20 is: 404,817.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,897.57 : 1,036,346.34 = 269,878.20 : x
  2. Step 2: Convert to fraction form
    690,897.57/1,036,346.34 = 269,878.20/x
  3. Step 3: Cross multiply
    690,897.57x = 1,036,346.34 × 269,878.20
  4. Step 4: Simplify right side
    690,897.57x = 279,687,284,815.79
  5. Step 5: Solve for x
    x = 279,687,284,815.79/690,897.57
  6. Step 6: Final answer
    x = 404,817.29

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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.