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Finding the Fourth Proportional to 681,420.43, 940,401.34 and 375,496.29

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Solution

The fourth proportional to 681,420.43, 940,401.34 and 375,496.29 is: 518,207.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,420.43 : 940,401.34 = 375,496.29 : x
  2. Step 2: Convert to fraction form
    681,420.43/940,401.34 = 375,496.29/x
  3. Step 3: Cross multiply
    681,420.43x = 940,401.34 × 375,496.29
  4. Step 4: Simplify right side
    681,420.43x = 353,117,215,454.45
  5. Step 5: Solve for x
    x = 353,117,215,454.45/681,420.43
  6. Step 6: Final answer
    x = 518,207.55

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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.