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Finding the Fourth Proportional to 492,642.27, 679,845.89 and 266,287.77

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Solution

The fourth proportional to 492,642.27, 679,845.89 and 266,287.77 is: 367,476.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,642.27 : 679,845.89 = 266,287.77 : x
  2. Step 2: Convert to fraction form
    492,642.27/679,845.89 = 266,287.77/x
  3. Step 3: Cross multiply
    492,642.27x = 679,845.89 × 266,287.77
  4. Step 4: Simplify right side
    492,642.27x = 181,034,646,657.49
  5. Step 5: Solve for x
    x = 181,034,646,657.49/492,642.27
  6. Step 6: Final answer
    x = 367,476.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.