Home / 748,681.38-1,123,138.71-449,091.54

Finding the Fourth Proportional to 748,681.38, 1,123,138.71 and 449,091.54

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Solution

The fourth proportional to 748,681.38, 1,123,138.71 and 449,091.54 is: 673,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,681.38 : 1,123,138.71 = 449,091.54 : x
  2. Step 2: Convert to fraction form
    748,681.38/1,123,138.71 = 449,091.54/x
  3. Step 3: Cross multiply
    748,681.38x = 1,123,138.71 × 449,091.54
  4. Step 4: Simplify right side
    748,681.38x = 504,392,092,907.51
  5. Step 5: Solve for x
    x = 504,392,092,907.51/748,681.38
  6. Step 6: Final answer
    x = 673,707.28

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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.