Home / 515,079.07-772,840.61-278,588.23

Finding the Fourth Proportional to 515,079.07, 772,840.61 and 278,588.23

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Solution

The fourth proportional to 515,079.07, 772,840.61 and 278,588.23 is: 418,002.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,079.07 : 772,840.61 = 278,588.23 : x
  2. Step 2: Convert to fraction form
    515,079.07/772,840.61 = 278,588.23/x
  3. Step 3: Cross multiply
    515,079.07x = 772,840.61 × 278,588.23
  4. Step 4: Simplify right side
    515,079.07x = 215,304,297,612.02
  5. Step 5: Solve for x
    x = 215,304,297,612.02/515,079.07
  6. Step 6: Final answer
    x = 418,002.42

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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.