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Finding the Fourth Proportional to 709,171, 978,655.98 and 454,522.19

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Solution

The fourth proportional to 709,171, 978,655.98 and 454,522.19 is: 627,240.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,171 : 978,655.98 = 454,522.19 : x
  2. Step 2: Convert to fraction form
    709,171/978,655.98 = 454,522.19/x
  3. Step 3: Cross multiply
    709,171x = 978,655.98 × 454,522.19
  4. Step 4: Simplify right side
    709,171x = 444,820,859,286.20
  5. Step 5: Solve for x
    x = 444,820,859,286.20/709,171
  6. Step 6: Final answer
    x = 627,240.62

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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.