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Finding the Fourth Proportional to 613,105.80, 846,159.66 and 371,381.28

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Solution

The fourth proportional to 613,105.80, 846,159.66 and 371,381.28 is: 512,550.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,105.80 : 846,159.66 = 371,381.28 : x
  2. Step 2: Convert to fraction form
    613,105.80/846,159.66 = 371,381.28/x
  3. Step 3: Cross multiply
    613,105.80x = 846,159.66 × 371,381.28
  4. Step 4: Simplify right side
    613,105.80x = 314,247,857,615.17
  5. Step 5: Solve for x
    x = 314,247,857,615.17/613,105.80
  6. Step 6: Final answer
    x = 512,550.78

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1.5x scale

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.