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Finding the Fourth Proportional to 1,236,493.80, 1,854,740.70 and 1,023,917.40

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Solution

The fourth proportional to 1,236,493.80, 1,854,740.70 and 1,023,917.40 is: 1,535,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236,493.80 : 1,854,740.70 = 1,023,917.40 : x
  2. Step 2: Convert to fraction form
    1,236,493.80/1,854,740.70 = 1,023,917.40/x
  3. Step 3: Cross multiply
    1,236,493.80x = 1,854,740.70 × 1,023,917.40
  4. Step 4: Simplify right side
    1,236,493.80x = 1,899,101,275,218.18
  5. Step 5: Solve for x
    x = 1,899,101,275,218.18/1,236,493.80
  6. Step 6: Final answer
    x = 1,535,876.10

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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.