Home / 387,067.60-579,823.80-268,872.40

Finding the Fourth Proportional to 387,067.60, 579,823.80 and 268,872.40

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Solution

The fourth proportional to 387,067.60, 579,823.80 and 268,872.40 is: 402,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,067.60 : 579,823.80 = 268,872.40 : x
  2. Step 2: Convert to fraction form
    387,067.60/579,823.80 = 268,872.40/x
  3. Step 3: Cross multiply
    387,067.60x = 579,823.80 × 268,872.40
  4. Step 4: Simplify right side
    387,067.60x = 155,898,616,683.12
  5. Step 5: Solve for x
    x = 155,898,616,683.12/387,067.60
  6. Step 6: Final answer
    x = 402,768.45

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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.