Home / 768,243.26-1,060,176.57-428,711.42

Finding the Fourth Proportional to 768,243.26, 1,060,176.57 and 428,711.42

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Solution

The fourth proportional to 768,243.26, 1,060,176.57 and 428,711.42 is: 591,622.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,243.26 : 1,060,176.57 = 428,711.42 : x
  2. Step 2: Convert to fraction form
    768,243.26/1,060,176.57 = 428,711.42/x
  3. Step 3: Cross multiply
    768,243.26x = 1,060,176.57 × 428,711.42
  4. Step 4: Simplify right side
    768,243.26x = 454,509,802,775.43
  5. Step 5: Solve for x
    x = 454,509,802,775.43/768,243.26
  6. Step 6: Final answer
    x = 591,622.25

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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.