Home / 783,515.62-1,175,605.51-428,114.45

Finding the Fourth Proportional to 783,515.62, 1,175,605.51 and 428,114.45

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Solution

The fourth proportional to 783,515.62, 1,175,605.51 and 428,114.45 is: 642,353.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,515.62 : 1,175,605.51 = 428,114.45 : x
  2. Step 2: Convert to fraction form
    783,515.62/1,175,605.51 = 428,114.45/x
  3. Step 3: Cross multiply
    783,515.62x = 1,175,605.51 × 428,114.45
  4. Step 4: Simplify right side
    783,515.62x = 503,293,706,330.62
  5. Step 5: Solve for x
    x = 503,293,706,330.62/783,515.62
  6. Step 6: Final answer
    x = 642,353.12

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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.