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Finding the Fourth Proportional to 876,479.07, 1,200,770.61 and 843,703.77

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Solution

The fourth proportional to 876,479.07, 1,200,770.61 and 843,703.77 is: 1,155,868.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,479.07 : 1,200,770.61 = 843,703.77 : x
  2. Step 2: Convert to fraction form
    876,479.07/1,200,770.61 = 843,703.77/x
  3. Step 3: Cross multiply
    876,479.07x = 1,200,770.61 × 843,703.77
  4. Step 4: Simplify right side
    876,479.07x = 1,013,094,690,562.20
  5. Step 5: Solve for x
    x = 1,013,094,690,562.20/876,479.07
  6. Step 6: Final answer
    x = 1,155,868.66

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.