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Finding the Fourth Proportional to 503,402.72, 694,711.52 and 285,620.58

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Solution

The fourth proportional to 503,402.72, 694,711.52 and 285,620.58 is: 394,165.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,402.72 : 694,711.52 = 285,620.58 : x
  2. Step 2: Convert to fraction form
    503,402.72/694,711.52 = 285,620.58/x
  3. Step 3: Cross multiply
    503,402.72x = 694,711.52 × 285,620.58
  4. Step 4: Simplify right side
    503,402.72x = 198,423,907,275.08
  5. Step 5: Solve for x
    x = 198,423,907,275.08/503,402.72
  6. Step 6: Final answer
    x = 394,165.35

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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.