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Finding the Fourth Proportional to 520,263, 717,962.94 and 281,799

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Solution

The fourth proportional to 520,263, 717,962.94 and 281,799 is: 388,882.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,263 : 717,962.94 = 281,799 : x
  2. Step 2: Convert to fraction form
    520,263/717,962.94 = 281,799/x
  3. Step 3: Cross multiply
    520,263x = 717,962.94 × 281,799
  4. Step 4: Simplify right side
    520,263x = 202,321,238,529.06
  5. Step 5: Solve for x
    x = 202,321,238,529.06/520,263
  6. Step 6: Final answer
    x = 388,882.62

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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.