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Finding the Fourth Proportional to 3,619,686.46, 5,430,229.54 and 1,375,649.50

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Solution

The fourth proportional to 3,619,686.46, 5,430,229.54 and 1,375,649.50 is: 2,063,740.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619,686.46 : 5,430,229.54 = 1,375,649.50 : x
  2. Step 2: Convert to fraction form
    3,619,686.46/5,430,229.54 = 1,375,649.50/x
  3. Step 3: Cross multiply
    3,619,686.46x = 5,430,229.54 × 1,375,649.50
  4. Step 4: Simplify right side
    3,619,686.46x = 7,470,092,551,586.23
  5. Step 5: Solve for x
    x = 7,470,092,551,586.23/3,619,686.46
  6. Step 6: Final answer
    x = 2,063,740.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.