Home / 1,249,868.40-1,874,899.79-408,505.20

Finding the Fourth Proportional to 1,249,868.40, 1,874,899.79 and 408,505.20

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Solution

The fourth proportional to 1,249,868.40, 1,874,899.79 and 408,505.20 is: 612,789.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249,868.40 : 1,874,899.79 = 408,505.20 : x
  2. Step 2: Convert to fraction form
    1,249,868.40/1,874,899.79 = 408,505.20/x
  3. Step 3: Cross multiply
    1,249,868.40x = 1,874,899.79 × 408,505.20
  4. Step 4: Simplify right side
    1,249,868.40x = 765,906,313,693.91
  5. Step 5: Solve for x
    x = 765,906,313,693.91/1,249,868.40
  6. Step 6: Final answer
    x = 612,789.57

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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.