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Finding the Fourth Proportional to 681,515.86, 940,498.41 and 375,603.34

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Solution

The fourth proportional to 681,515.86, 940,498.41 and 375,603.34 is: 518,336.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,515.86 : 940,498.41 = 375,603.34 : x
  2. Step 2: Convert to fraction form
    681,515.86/940,498.41 = 375,603.34/x
  3. Step 3: Cross multiply
    681,515.86x = 940,498.41 × 375,603.34
  4. Step 4: Simplify right side
    681,515.86x = 353,254,344,060.69
  5. Step 5: Solve for x
    x = 353,254,344,060.69/681,515.86
  6. Step 6: Final answer
    x = 518,336.20

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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.