Home / 1,226,998.80-1,840,498.20-778,226.40

Finding the Fourth Proportional to 1,226,998.80, 1,840,498.20 and 778,226.40

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Solution

The fourth proportional to 1,226,998.80, 1,840,498.20 and 778,226.40 is: 1,167,339.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,226,998.80 : 1,840,498.20 = 778,226.40 : x
  2. Step 2: Convert to fraction form
    1,226,998.80/1,840,498.20 = 778,226.40/x
  3. Step 3: Cross multiply
    1,226,998.80x = 1,840,498.20 × 778,226.40
  4. Step 4: Simplify right side
    1,226,998.80x = 1,432,324,288,392.48
  5. Step 5: Solve for x
    x = 1,432,324,288,392.48/1,226,998.80
  6. Step 6: Final answer
    x = 1,167,339.60

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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.