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Finding the Fourth Proportional to 652,112.30, 978,168.45 and 540,137.90

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Solution

The fourth proportional to 652,112.30, 978,168.45 and 540,137.90 is: 810,206.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,112.30 : 978,168.45 = 540,137.90 : x
  2. Step 2: Convert to fraction form
    652,112.30/978,168.45 = 540,137.90/x
  3. Step 3: Cross multiply
    652,112.30x = 978,168.45 × 540,137.90
  4. Step 4: Simplify right side
    652,112.30x = 528,345,852,429.26
  5. Step 5: Solve for x
    x = 528,345,852,429.26/652,112.30
  6. Step 6: Final answer
    x = 810,206.85

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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.