Home / 720,397.80-1,079,710.97-404,190.41

Finding the Fourth Proportional to 720,397.80, 1,079,710.97 and 404,190.41

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Solution

The fourth proportional to 720,397.80, 1,079,710.97 and 404,190.41 is: 605,788.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,397.80 : 1,079,710.97 = 404,190.41 : x
  2. Step 2: Convert to fraction form
    720,397.80/1,079,710.97 = 404,190.41/x
  3. Step 3: Cross multiply
    720,397.80x = 1,079,710.97 × 404,190.41
  4. Step 4: Simplify right side
    720,397.80x = 436,408,812,226.29
  5. Step 5: Solve for x
    x = 436,408,812,226.29/720,397.80
  6. Step 6: Final answer
    x = 605,788.65

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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.