Home / 1,438,310.40-2,159,020.80-808,454.40

Finding the Fourth Proportional to 1,438,310.40, 2,159,020.80 and 808,454.40

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Solution

The fourth proportional to 1,438,310.40, 2,159,020.80 and 808,454.40 is: 1,213,555.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,310.40 : 2,159,020.80 = 808,454.40 : x
  2. Step 2: Convert to fraction form
    1,438,310.40/2,159,020.80 = 808,454.40/x
  3. Step 3: Cross multiply
    1,438,310.40x = 2,159,020.80 × 808,454.40
  4. Step 4: Simplify right side
    1,438,310.40x = 1,745,469,865,451.52
  5. Step 5: Solve for x
    x = 1,745,469,865,451.52/1,438,310.40
  6. Step 6: Final answer
    x = 1,213,555.76

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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.