Home / 765,950.26-1,148,126.73-428,496.16

Finding the Fourth Proportional to 765,950.26, 1,148,126.73 and 428,496.16

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Solution

The fourth proportional to 765,950.26, 1,148,126.73 and 428,496.16 is: 642,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,950.26 : 1,148,126.73 = 428,496.16 : x
  2. Step 2: Convert to fraction form
    765,950.26/1,148,126.73 = 428,496.16/x
  3. Step 3: Cross multiply
    765,950.26x = 1,148,126.73 × 428,496.16
  4. Step 4: Simplify right side
    765,950.26x = 491,967,894,998.36
  5. Step 5: Solve for x
    x = 491,967,894,998.36/765,950.26
  6. Step 6: Final answer
    x = 642,297.45

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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.