Home / 815,307.87-1,223,112.15-268,231.07

Finding the Fourth Proportional to 815,307.87, 1,223,112.15 and 268,231.07

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Solution

The fourth proportional to 815,307.87, 1,223,112.15 and 268,231.07 is: 402,396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,307.87 : 1,223,112.15 = 268,231.07 : x
  2. Step 2: Convert to fraction form
    815,307.87/1,223,112.15 = 268,231.07/x
  3. Step 3: Cross multiply
    815,307.87x = 1,223,112.15 × 268,231.07
  4. Step 4: Simplify right side
    815,307.87x = 328,076,680,724.50
  5. Step 5: Solve for x
    x = 328,076,680,724.50/815,307.87
  6. Step 6: Final answer
    x = 402,396.07

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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.