Home / 1,128,502.62-1,691,665.29-380,140.38

Finding the Fourth Proportional to 1,128,502.62, 1,691,665.29 and 380,140.38

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Solution

The fourth proportional to 1,128,502.62, 1,691,665.29 and 380,140.38 is: 569,843.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,502.62 : 1,691,665.29 = 380,140.38 : x
  2. Step 2: Convert to fraction form
    1,128,502.62/1,691,665.29 = 380,140.38/x
  3. Step 3: Cross multiply
    1,128,502.62x = 1,691,665.29 × 380,140.38
  4. Step 4: Simplify right side
    1,128,502.62x = 643,070,286,173.41
  5. Step 5: Solve for x
    x = 643,070,286,173.41/1,128,502.62
  6. Step 6: Final answer
    x = 569,843.86

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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.