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Finding the Fourth Proportional to 622,138.92, 932,340.84 and 470,211.28

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Solution

The fourth proportional to 622,138.92, 932,340.84 and 470,211.28 is: 704,661.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,138.92 : 932,340.84 = 470,211.28 : x
  2. Step 2: Convert to fraction form
    622,138.92/932,340.84 = 470,211.28/x
  3. Step 3: Cross multiply
    622,138.92x = 932,340.84 × 470,211.28
  4. Step 4: Simplify right side
    622,138.92x = 438,397,175,110.97
  5. Step 5: Solve for x
    x = 438,397,175,110.97/622,138.92
  6. Step 6: Final answer
    x = 704,661.23

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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.