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Finding the Fourth Proportional to 425,766.54, 639,092.68 and 313,573.44

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Solution

The fourth proportional to 425,766.54, 639,092.68 and 313,573.44 is: 470,686.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,766.54 : 639,092.68 = 313,573.44 : x
  2. Step 2: Convert to fraction form
    425,766.54/639,092.68 = 313,573.44/x
  3. Step 3: Cross multiply
    425,766.54x = 639,092.68 × 313,573.44
  4. Step 4: Simplify right side
    425,766.54x = 200,402,490,146.42
  5. Step 5: Solve for x
    x = 200,402,490,146.42/425,766.54
  6. Step 6: Final answer
    x = 470,686.33

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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.