Home / 748,711.03-1,123,128.82-243,260.81

Finding the Fourth Proportional to 748,711.03, 1,123,128.82 and 243,260.81

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Solution

The fourth proportional to 748,711.03, 1,123,128.82 and 243,260.81 is: 364,911.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,711.03 : 1,123,128.82 = 243,260.81 : x
  2. Step 2: Convert to fraction form
    748,711.03/1,123,128.82 = 243,260.81/x
  3. Step 3: Cross multiply
    748,711.03x = 1,123,128.82 × 243,260.81
  4. Step 4: Simplify right side
    748,711.03x = 273,213,226,487.54
  5. Step 5: Solve for x
    x = 273,213,226,487.54/748,711.03
  6. Step 6: Final answer
    x = 364,911.45

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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.