Home / 1,988,030.40-2,982,045.60-1,278,859.20

Finding the Fourth Proportional to 1,988,030.40, 2,982,045.60 and 1,278,859.20

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Solution

The fourth proportional to 1,988,030.40, 2,982,045.60 and 1,278,859.20 is: 1,918,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,030.40 : 2,982,045.60 = 1,278,859.20 : x
  2. Step 2: Convert to fraction form
    1,988,030.40/2,982,045.60 = 1,278,859.20/x
  3. Step 3: Cross multiply
    1,988,030.40x = 2,982,045.60 × 1,278,859.20
  4. Step 4: Simplify right side
    1,988,030.40x = 3,813,616,450,379.52
  5. Step 5: Solve for x
    x = 3,813,616,450,379.52/1,988,030.40
  6. Step 6: Final answer
    x = 1,918,288.80

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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.