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Finding the Fourth Proportional to 669,019.86, 921,972.48 and 656,722.44

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Solution

The fourth proportional to 669,019.86, 921,972.48 and 656,722.44 is: 905,025.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,019.86 : 921,972.48 = 656,722.44 : x
  2. Step 2: Convert to fraction form
    669,019.86/921,972.48 = 656,722.44/x
  3. Step 3: Cross multiply
    669,019.86x = 921,972.48 × 656,722.44
  4. Step 4: Simplify right side
    669,019.86x = 605,480,016,678.45
  5. Step 5: Solve for x
    x = 605,480,016,678.45/669,019.86
  6. Step 6: Final answer
    x = 905,025.48

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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.