Home / 1,378,230.40-1,901,805.60-826,916.80

Finding the Fourth Proportional to 1,378,230.40, 1,901,805.60 and 826,916.80

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Solution

The fourth proportional to 1,378,230.40, 1,901,805.60 and 826,916.80 is: 1,141,053.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,230.40 : 1,901,805.60 = 826,916.80 : x
  2. Step 2: Convert to fraction form
    1,378,230.40/1,901,805.60 = 826,916.80/x
  3. Step 3: Cross multiply
    1,378,230.40x = 1,901,805.60 × 826,916.80
  4. Step 4: Simplify right side
    1,378,230.40x = 1,572,635,000,974.08
  5. Step 5: Solve for x
    x = 1,572,635,000,974.08/1,378,230.40
  6. Step 6: Final answer
    x = 1,141,053.78

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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.