Home / 815,491.81-1,222,926.08-268,256.91

Finding the Fourth Proportional to 815,491.81, 1,222,926.08 and 268,256.91

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Solution

The fourth proportional to 815,491.81, 1,222,926.08 and 268,256.91 is: 402,282.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,491.81 : 1,222,926.08 = 268,256.91 : x
  2. Step 2: Convert to fraction form
    815,491.81/1,222,926.08 = 268,256.91/x
  3. Step 3: Cross multiply
    815,491.81x = 1,222,926.08 × 268,256.91
  4. Step 4: Simplify right side
    815,491.81x = 328,058,374,623.90
  5. Step 5: Solve for x
    x = 328,058,374,623.90/815,491.81
  6. Step 6: Final answer
    x = 402,282.86

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1.5x scale

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.