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Finding the Fourth Proportional to 503,078.85, 694,347.39 and 288,362.70

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Solution

The fourth proportional to 503,078.85, 694,347.39 and 288,362.70 is: 397,997.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,078.85 : 694,347.39 = 288,362.70 : x
  2. Step 2: Convert to fraction form
    503,078.85/694,347.39 = 288,362.70/x
  3. Step 3: Cross multiply
    503,078.85x = 694,347.39 × 288,362.70
  4. Step 4: Simplify right side
    503,078.85x = 200,223,888,118.35
  5. Step 5: Solve for x
    x = 200,223,888,118.35/503,078.85
  6. Step 6: Final answer
    x = 397,997.03

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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.