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Finding the Fourth Proportional to 709,022.84, 978,812.72 and 547,515.32

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Solution

The fourth proportional to 709,022.84, 978,812.72 and 547,515.32 is: 755,850.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,022.84 : 978,812.72 = 547,515.32 : x
  2. Step 2: Convert to fraction form
    709,022.84/978,812.72 = 547,515.32/x
  3. Step 3: Cross multiply
    709,022.84x = 978,812.72 × 547,515.32
  4. Step 4: Simplify right side
    709,022.84x = 535,914,951,979.23
  5. Step 5: Solve for x
    x = 535,914,951,979.23/709,022.84
  6. Step 6: Final answer
    x = 755,850.06

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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.