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Finding the Fourth Proportional to 1,278,869.22, 1,764,854.28 and 705,909.96

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Solution

The fourth proportional to 1,278,869.22, 1,764,854.28 and 705,909.96 is: 974,163.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,869.22 : 1,764,854.28 = 705,909.96 : x
  2. Step 2: Convert to fraction form
    1,278,869.22/1,764,854.28 = 705,909.96/x
  3. Step 3: Cross multiply
    1,278,869.22x = 1,764,854.28 × 705,909.96
  4. Step 4: Simplify right side
    1,278,869.22x = 1,245,828,214,200.63
  5. Step 5: Solve for x
    x = 1,245,828,214,200.63/1,278,869.22
  6. Step 6: Final answer
    x = 974,163.89

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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.