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Finding the Fourth Proportional to 617,312.80, 925,531.80 and 280,514.80

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Solution

The fourth proportional to 617,312.80, 925,531.80 and 280,514.80 is: 420,573.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,312.80 : 925,531.80 = 280,514.80 : x
  2. Step 2: Convert to fraction form
    617,312.80/925,531.80 = 280,514.80/x
  3. Step 3: Cross multiply
    617,312.80x = 925,531.80 × 280,514.80
  4. Step 4: Simplify right side
    617,312.80x = 259,625,367,770.64
  5. Step 5: Solve for x
    x = 259,625,367,770.64/617,312.80
  6. Step 6: Final answer
    x = 420,573.44

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1.5x scale

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.