Home / 1,427,320.62-1,969,520.94-815,513

Finding the Fourth Proportional to 1,427,320.62, 1,969,520.94 and 815,513

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Solution

The fourth proportional to 1,427,320.62, 1,969,520.94 and 815,513 is: 1,125,304.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,320.62 : 1,969,520.94 = 815,513 : x
  2. Step 2: Convert to fraction form
    1,427,320.62/1,969,520.94 = 815,513/x
  3. Step 3: Cross multiply
    1,427,320.62x = 1,969,520.94 × 815,513
  4. Step 4: Simplify right side
    1,427,320.62x = 1,606,169,930,342.22
  5. Step 5: Solve for x
    x = 1,606,169,930,342.22/1,427,320.62
  6. Step 6: Final answer
    x = 1,125,304.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.