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Finding the Fourth Proportional to 2,612,045.22, 3,918,675.32 and 814,831.80

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Solution

The fourth proportional to 2,612,045.22, 3,918,675.32 and 814,831.80 is: 1,222,437.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612,045.22 : 3,918,675.32 = 814,831.80 : x
  2. Step 2: Convert to fraction form
    2,612,045.22/3,918,675.32 = 814,831.80/x
  3. Step 3: Cross multiply
    2,612,045.22x = 3,918,675.32 × 814,831.80
  4. Step 4: Simplify right side
    2,612,045.22x = 3,193,061,264,611.18
  5. Step 5: Solve for x
    x = 3,193,061,264,611.18/2,612,045.22
  6. Step 6: Final answer
    x = 1,222,437.21

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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.