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Finding the Fourth Proportional to 625,085.38, 862,621.98 and 338,605.48

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Solution

The fourth proportional to 625,085.38, 862,621.98 and 338,605.48 is: 467,277.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,085.38 : 862,621.98 = 338,605.48 : x
  2. Step 2: Convert to fraction form
    625,085.38/862,621.98 = 338,605.48/x
  3. Step 3: Cross multiply
    625,085.38x = 862,621.98 × 338,605.48
  4. Step 4: Simplify right side
    625,085.38x = 292,088,529,596.45
  5. Step 5: Solve for x
    x = 292,088,529,596.45/625,085.38
  6. Step 6: Final answer
    x = 467,277.81

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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.