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Finding the Fourth Proportional to 852,876, 1,279,320.48 and 291,915.36

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Solution

The fourth proportional to 852,876, 1,279,320.48 and 291,915.36 is: 437,875.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,876 : 1,279,320.48 = 291,915.36 : x
  2. Step 2: Convert to fraction form
    852,876/1,279,320.48 = 291,915.36/x
  3. Step 3: Cross multiply
    852,876x = 1,279,320.48 × 291,915.36
  4. Step 4: Simplify right side
    852,876x = 373,453,298,474.57
  5. Step 5: Solve for x
    x = 373,453,298,474.57/852,876
  6. Step 6: Final answer
    x = 437,875.26

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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.