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Finding the Fourth Proportional to 709,170.50, 978,655.29 and 454,521.69

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Solution

The fourth proportional to 709,170.50, 978,655.29 and 454,521.69 is: 627,239.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,170.50 : 978,655.29 = 454,521.69 : x
  2. Step 2: Convert to fraction form
    709,170.50/978,655.29 = 454,521.69/x
  3. Step 3: Cross multiply
    709,170.50x = 978,655.29 × 454,521.69
  4. Step 4: Simplify right side
    709,170.50x = 444,820,056,338.24
  5. Step 5: Solve for x
    x = 444,820,056,338.24/709,170.50
  6. Step 6: Final answer
    x = 627,239.93

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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.