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Finding the Fourth Proportional to 503,332.81, 694,629.20 and 288,486.69

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Solution

The fourth proportional to 503,332.81, 694,629.20 and 288,486.69 is: 398,128.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,332.81 : 694,629.20 = 288,486.69 : x
  2. Step 2: Convert to fraction form
    503,332.81/694,629.20 = 288,486.69/x
  3. Step 3: Cross multiply
    503,332.81x = 694,629.20 × 288,486.69
  4. Step 4: Simplify right side
    503,332.81x = 200,391,278,685.35
  5. Step 5: Solve for x
    x = 200,391,278,685.35/503,332.81
  6. Step 6: Final answer
    x = 398,128.78

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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.