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Finding the Fourth Proportional to 681,420.37, 940,366.41 and 375,507.70

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Solution

The fourth proportional to 681,420.37, 940,366.41 and 375,507.70 is: 518,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,420.37 : 940,366.41 = 375,507.70 : x
  2. Step 2: Convert to fraction form
    681,420.37/940,366.41 = 375,507.70/x
  3. Step 3: Cross multiply
    681,420.37x = 940,366.41 × 375,507.70
  4. Step 4: Simplify right side
    681,420.37x = 353,114,826,129.52
  5. Step 5: Solve for x
    x = 353,114,826,129.52/681,420.37
  6. Step 6: Final answer
    x = 518,204.09

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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.