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Finding the Fourth Proportional to 663,417.62, 914,792.82 and 448,183.97

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Solution

The fourth proportional to 663,417.62, 914,792.82 and 448,183.97 is: 618,005.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,417.62 : 914,792.82 = 448,183.97 : x
  2. Step 2: Convert to fraction form
    663,417.62/914,792.82 = 448,183.97/x
  3. Step 3: Cross multiply
    663,417.62x = 914,792.82 × 448,183.97
  4. Step 4: Simplify right side
    663,417.62x = 409,995,477,795.10
  5. Step 5: Solve for x
    x = 409,995,477,795.10/663,417.62
  6. Step 6: Final answer
    x = 618,005.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.