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Finding the Fourth Proportional to 503,389.22, 694,520.76 and 285,561.98

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Solution

The fourth proportional to 503,389.22, 694,520.76 and 285,561.98 is: 393,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,389.22 : 694,520.76 = 285,561.98 : x
  2. Step 2: Convert to fraction form
    503,389.22/694,520.76 = 285,561.98/x
  3. Step 3: Cross multiply
    503,389.22x = 694,520.76 × 285,561.98
  4. Step 4: Simplify right side
    503,389.22x = 198,328,723,376.71
  5. Step 5: Solve for x
    x = 198,328,723,376.71/503,389.22
  6. Step 6: Final answer
    x = 393,986.83

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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.