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Finding the Fourth Proportional to 520,187, 717,858.06 and 281,723

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Solution

The fourth proportional to 520,187, 717,858.06 and 281,723 is: 388,777.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,187 : 717,858.06 = 281,723 : x
  2. Step 2: Convert to fraction form
    520,187/717,858.06 = 281,723/x
  3. Step 3: Cross multiply
    520,187x = 717,858.06 × 281,723
  4. Step 4: Simplify right side
    520,187x = 202,237,126,237.38
  5. Step 5: Solve for x
    x = 202,237,126,237.38/520,187
  6. Step 6: Final answer
    x = 388,777.74

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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.