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Finding the Fourth Proportional to 1,829,318.88, 2,743,978.32 and 763,780.80

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Solution

The fourth proportional to 1,829,318.88, 2,743,978.32 and 763,780.80 is: 1,145,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,829,318.88 : 2,743,978.32 = 763,780.80 : x
  2. Step 2: Convert to fraction form
    1,829,318.88/2,743,978.32 = 763,780.80/x
  3. Step 3: Cross multiply
    1,829,318.88x = 2,743,978.32 × 763,780.80
  4. Step 4: Simplify right side
    1,829,318.88x = 2,095,797,956,432.26
  5. Step 5: Solve for x
    x = 2,095,797,956,432.26/1,829,318.88
  6. Step 6: Final answer
    x = 1,145,671.20

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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.