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Finding the Fourth Proportional to 503,134.32, 694,343.37 and 288,315.87

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Solution

The fourth proportional to 503,134.32, 694,343.37 and 288,315.87 is: 397,886.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,134.32 : 694,343.37 = 288,315.87 : x
  2. Step 2: Convert to fraction form
    503,134.32/694,343.37 = 288,315.87/x
  3. Step 3: Cross multiply
    503,134.32x = 694,343.37 × 288,315.87
  4. Step 4: Simplify right side
    503,134.32x = 200,190,212,800.28
  5. Step 5: Solve for x
    x = 200,190,212,800.28/503,134.32
  6. Step 6: Final answer
    x = 397,886.22

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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.