Home / 1,382,223.78-2,070,645.62-781,367.40

Finding the Fourth Proportional to 1,382,223.78, 2,070,645.62 and 781,367.40

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Solution

The fourth proportional to 1,382,223.78, 2,070,645.62 and 781,367.40 is: 1,170,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,223.78 : 2,070,645.62 = 781,367.40 : x
  2. Step 2: Convert to fraction form
    1,382,223.78/2,070,645.62 = 781,367.40/x
  3. Step 3: Cross multiply
    1,382,223.78x = 2,070,645.62 × 781,367.40
  4. Step 4: Simplify right side
    1,382,223.78x = 1,617,934,980,513.95
  5. Step 5: Solve for x
    x = 1,617,934,980,513.95/1,382,223.78
  6. Step 6: Final answer
    x = 1,170,530.42

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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.