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Finding the Fourth Proportional to 681,498, 940,473.66 and 375,585.40

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Solution

The fourth proportional to 681,498, 940,473.66 and 375,585.40 is: 518,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,498 : 940,473.66 = 375,585.40 : x
  2. Step 2: Convert to fraction form
    681,498/940,473.66 = 375,585.40/x
  3. Step 3: Cross multiply
    681,498x = 940,473.66 × 375,585.40
  4. Step 4: Simplify right side
    681,498x = 353,228,171,665.99
  5. Step 5: Solve for x
    x = 353,228,171,665.99/681,498
  6. Step 6: Final answer
    x = 518,311.38

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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.