Home / 386,412.60-579,618.90-268,217.40

Finding the Fourth Proportional to 386,412.60, 579,618.90 and 268,217.40

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Solution

The fourth proportional to 386,412.60, 579,618.90 and 268,217.40 is: 402,326.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,412.60 : 579,618.90 = 268,217.40 : x
  2. Step 2: Convert to fraction form
    386,412.60/579,618.90 = 268,217.40/x
  3. Step 3: Cross multiply
    386,412.60x = 579,618.90 × 268,217.40
  4. Step 4: Simplify right side
    386,412.60x = 155,463,874,348.86
  5. Step 5: Solve for x
    x = 155,463,874,348.86/386,412.60
  6. Step 6: Final answer
    x = 402,326.10

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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.