Home / 1,325,891.20-1,988,836.80-822,006.40

Finding the Fourth Proportional to 1,325,891.20, 1,988,836.80 and 822,006.40

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Solution

The fourth proportional to 1,325,891.20, 1,988,836.80 and 822,006.40 is: 1,233,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,325,891.20 : 1,988,836.80 = 822,006.40 : x
  2. Step 2: Convert to fraction form
    1,325,891.20/1,988,836.80 = 822,006.40/x
  3. Step 3: Cross multiply
    1,325,891.20x = 1,988,836.80 × 822,006.40
  4. Step 4: Simplify right side
    1,325,891.20x = 1,634,836,578,155.52
  5. Step 5: Solve for x
    x = 1,634,836,578,155.52/1,325,891.20
  6. Step 6: Final answer
    x = 1,233,009.60

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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.