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Finding the Fourth Proportional to 681,666.97, 940,707 and 375,755.17

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Solution

The fourth proportional to 681,666.97, 940,707 and 375,755.17 is: 518,545.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,666.97 : 940,707 = 375,755.17 : x
  2. Step 2: Convert to fraction form
    681,666.97/940,707 = 375,755.17/x
  3. Step 3: Cross multiply
    681,666.97x = 940,707 × 375,755.17
  4. Step 4: Simplify right side
    681,666.97x = 353,475,518,705.19
  5. Step 5: Solve for x
    x = 353,475,518,705.19/681,666.97
  6. Step 6: Final answer
    x = 518,545.76

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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.