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Finding the Fourth Proportional to 520,191, 717,863.58 and 281,727

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Solution

The fourth proportional to 520,191, 717,863.58 and 281,727 is: 388,783.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,191 : 717,863.58 = 281,727 : x
  2. Step 2: Convert to fraction form
    520,191/717,863.58 = 281,727/x
  3. Step 3: Cross multiply
    520,191x = 717,863.58 × 281,727
  4. Step 4: Simplify right side
    520,191x = 202,241,552,802.66
  5. Step 5: Solve for x
    x = 202,241,552,802.66/520,191
  6. Step 6: Final answer
    x = 388,783.26

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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.