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Finding the Fourth Proportional to 876,008.60, 1,314,012.90 and 870,103.70

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Solution

The fourth proportional to 876,008.60, 1,314,012.90 and 870,103.70 is: 1,305,155.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,008.60 : 1,314,012.90 = 870,103.70 : x
  2. Step 2: Convert to fraction form
    876,008.60/1,314,012.90 = 870,103.70/x
  3. Step 3: Cross multiply
    876,008.60x = 1,314,012.90 × 870,103.70
  4. Step 4: Simplify right side
    876,008.60x = 1,143,327,486,137.73
  5. Step 5: Solve for x
    x = 1,143,327,486,137.73/876,008.60
  6. Step 6: Final answer
    x = 1,305,155.55

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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.