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Finding the Fourth Proportional to 681,807.18, 940,900 and 375,894.41

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Solution

The fourth proportional to 681,807.18, 940,900 and 375,894.41 is: 518,737.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,807.18 : 940,900 = 375,894.41 : x
  2. Step 2: Convert to fraction form
    681,807.18/940,900 = 375,894.41/x
  3. Step 3: Cross multiply
    681,807.18x = 940,900 × 375,894.41
  4. Step 4: Simplify right side
    681,807.18x = 353,679,050,369
  5. Step 5: Solve for x
    x = 353,679,050,369/681,807.18
  6. Step 6: Final answer
    x = 518,737.64

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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.