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Finding the Fourth Proportional to 681,573.45, 940,559.01 and 371,478.72

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Solution

The fourth proportional to 681,573.45, 940,559.01 and 371,478.72 is: 512,633.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,573.45 : 940,559.01 = 371,478.72 : x
  2. Step 2: Convert to fraction form
    681,573.45/940,559.01 = 371,478.72/x
  3. Step 3: Cross multiply
    681,573.45x = 940,559.01 × 371,478.72
  4. Step 4: Simplify right side
    681,573.45x = 349,397,657,119.27
  5. Step 5: Solve for x
    x = 349,397,657,119.27/681,573.45
  6. Step 6: Final answer
    x = 512,633.90

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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.