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Finding the Fourth Proportional to 969,036.78, 1,455,920.37 and 915,324.06

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Solution

The fourth proportional to 969,036.78, 1,455,920.37 and 915,324.06 is: 1,375,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,036.78 : 1,455,920.37 = 915,324.06 : x
  2. Step 2: Convert to fraction form
    969,036.78/1,455,920.37 = 915,324.06/x
  3. Step 3: Cross multiply
    969,036.78x = 1,455,920.37 × 915,324.06
  4. Step 4: Simplify right side
    969,036.78x = 1,332,638,944,105.10
  5. Step 5: Solve for x
    x = 1,332,638,944,105.10/969,036.78
  6. Step 6: Final answer
    x = 1,375,220.19

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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.