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Finding the Fourth Proportional to 503,348.40, 694,720.26 and 288,633.60

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Solution

The fourth proportional to 503,348.40, 694,720.26 and 288,633.60 is: 398,371.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,348.40 : 694,720.26 = 288,633.60 : x
  2. Step 2: Convert to fraction form
    503,348.40/694,720.26 = 288,633.60/x
  3. Step 3: Cross multiply
    503,348.40x = 694,720.26 × 288,633.60
  4. Step 4: Simplify right side
    503,348.40x = 200,519,609,636.74
  5. Step 5: Solve for x
    x = 200,519,609,636.74/503,348.40
  6. Step 6: Final answer
    x = 398,371.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.