Home / 2,218,478.90-3,328,086.42-778,789.10

Finding the Fourth Proportional to 2,218,478.90, 3,328,086.42 and 778,789.10

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Solution

The fourth proportional to 2,218,478.90, 3,328,086.42 and 778,789.10 is: 1,168,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,218,478.90 : 3,328,086.42 = 778,789.10 : x
  2. Step 2: Convert to fraction form
    2,218,478.90/3,328,086.42 = 778,789.10/x
  3. Step 3: Cross multiply
    2,218,478.90x = 3,328,086.42 × 778,789.10
  4. Step 4: Simplify right side
    2,218,478.90x = 2,591,877,436,074.24
  5. Step 5: Solve for x
    x = 2,591,877,436,074.24/2,218,478.90
  6. Step 6: Final answer
    x = 1,168,312.87

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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.