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Finding the Fourth Proportional to 681,574.45, 940,560.39 and 371,479.72

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Solution

The fourth proportional to 681,574.45, 940,560.39 and 371,479.72 is: 512,635.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,574.45 : 940,560.39 = 371,479.72 : x
  2. Step 2: Convert to fraction form
    681,574.45/940,560.39 = 371,479.72/x
  3. Step 3: Cross multiply
    681,574.45x = 940,560.39 × 371,479.72
  4. Step 4: Simplify right side
    681,574.45x = 349,399,110,320.29
  5. Step 5: Solve for x
    x = 349,399,110,320.29/681,574.45
  6. Step 6: Final answer
    x = 512,635.28

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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.