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Finding the Fourth Proportional to 702,915.77, 1,054,155.72 and 253,578.25

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Solution

The fourth proportional to 702,915.77, 1,054,155.72 and 253,578.25 is: 380,288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,915.77 : 1,054,155.72 = 253,578.25 : x
  2. Step 2: Convert to fraction form
    702,915.77/1,054,155.72 = 253,578.25/x
  3. Step 3: Cross multiply
    702,915.77x = 1,054,155.72 × 253,578.25
  4. Step 4: Simplify right side
    702,915.77x = 267,310,957,617.70
  5. Step 5: Solve for x
    x = 267,310,957,617.70/702,915.77
  6. Step 6: Final answer
    x = 380,288.75

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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.