Home / 783,729.18-1,175,926.59-428,328

Finding the Fourth Proportional to 783,729.18, 1,175,926.59 and 428,328

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Solution

The fourth proportional to 783,729.18, 1,175,926.59 and 428,328 is: 642,673.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,729.18 : 1,175,926.59 = 428,328 : x
  2. Step 2: Convert to fraction form
    783,729.18/1,175,926.59 = 428,328/x
  3. Step 3: Cross multiply
    783,729.18x = 1,175,926.59 × 428,328
  4. Step 4: Simplify right side
    783,729.18x = 503,682,284,441.52
  5. Step 5: Solve for x
    x = 503,682,284,441.52/783,729.18
  6. Step 6: Final answer
    x = 642,673.89

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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.