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Finding the Fourth Proportional to 908,648.40, 1,363,037.40 and 277,561.20

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Solution

The fourth proportional to 908,648.40, 1,363,037.40 and 277,561.20 is: 416,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,648.40 : 1,363,037.40 = 277,561.20 : x
  2. Step 2: Convert to fraction form
    908,648.40/1,363,037.40 = 277,561.20/x
  3. Step 3: Cross multiply
    908,648.40x = 1,363,037.40 × 277,561.20
  4. Step 4: Simplify right side
    908,648.40x = 378,326,296,388.88
  5. Step 5: Solve for x
    x = 378,326,296,388.88/908,648.40
  6. Step 6: Final answer
    x = 416,361.59

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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.