Home / 387,121.60-579,904.80-268,926.40

Finding the Fourth Proportional to 387,121.60, 579,904.80 and 268,926.40

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Solution

The fourth proportional to 387,121.60, 579,904.80 and 268,926.40 is: 402,849.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,121.60 : 579,904.80 = 268,926.40 : x
  2. Step 2: Convert to fraction form
    387,121.60/579,904.80 = 268,926.40/x
  3. Step 3: Cross multiply
    387,121.60x = 579,904.80 × 268,926.40
  4. Step 4: Simplify right side
    387,121.60x = 155,951,710,206.72
  5. Step 5: Solve for x
    x = 155,951,710,206.72/387,121.60
  6. Step 6: Final answer
    x = 402,849.42

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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.