Home / 426,945.65-639,089.87-268,841.96

Finding the Fourth Proportional to 426,945.65, 639,089.87 and 268,841.96

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Solution

The fourth proportional to 426,945.65, 639,089.87 and 268,841.96 is: 402,426.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,945.65 : 639,089.87 = 268,841.96 : x
  2. Step 2: Convert to fraction form
    426,945.65/639,089.87 = 268,841.96/x
  3. Step 3: Cross multiply
    426,945.65x = 639,089.87 × 268,841.96
  4. Step 4: Simplify right side
    426,945.65x = 171,814,168,727.29
  5. Step 5: Solve for x
    x = 171,814,168,727.29/426,945.65
  6. Step 6: Final answer
    x = 402,426.33

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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.