Home / 815,307.86-1,223,112.14-268,231.06

Finding the Fourth Proportional to 815,307.86, 1,223,112.14 and 268,231.06

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Solution

The fourth proportional to 815,307.86, 1,223,112.14 and 268,231.06 is: 402,396.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,307.86 : 1,223,112.14 = 268,231.06 : x
  2. Step 2: Convert to fraction form
    815,307.86/1,223,112.14 = 268,231.06/x
  3. Step 3: Cross multiply
    815,307.86x = 1,223,112.14 × 268,231.06
  4. Step 4: Simplify right side
    815,307.86x = 328,076,665,811.07
  5. Step 5: Solve for x
    x = 328,076,665,811.07/815,307.86
  6. Step 6: Final answer
    x = 402,396.05

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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.