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Finding the Fourth Proportional to 1,298,834.40, 1,948,251.60 and 850,936.80

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Solution

The fourth proportional to 1,298,834.40, 1,948,251.60 and 850,936.80 is: 1,276,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,834.40 : 1,948,251.60 = 850,936.80 : x
  2. Step 2: Convert to fraction form
    1,298,834.40/1,948,251.60 = 850,936.80/x
  3. Step 3: Cross multiply
    1,298,834.40x = 1,948,251.60 × 850,936.80
  4. Step 4: Simplify right side
    1,298,834.40x = 1,657,838,982,098.88
  5. Step 5: Solve for x
    x = 1,657,838,982,098.88/1,298,834.40
  6. Step 6: Final answer
    x = 1,276,405.20

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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.