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Finding the Fourth Proportional to 652,212.20, 978,318.30 and 575,229.80

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Solution

The fourth proportional to 652,212.20, 978,318.30 and 575,229.80 is: 862,844.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,212.20 : 978,318.30 = 575,229.80 : x
  2. Step 2: Convert to fraction form
    652,212.20/978,318.30 = 575,229.80/x
  3. Step 3: Cross multiply
    652,212.20x = 978,318.30 × 575,229.80
  4. Step 4: Simplify right side
    652,212.20x = 562,757,840,045.34
  5. Step 5: Solve for x
    x = 562,757,840,045.34/652,212.20
  6. Step 6: Final answer
    x = 862,844.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.