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Finding the Fourth Proportional to 652,086.10, 978,129.15 and 652,086.10

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Solution

The fourth proportional to 652,086.10, 978,129.15 and 652,086.10 is: 978,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,086.10 : 978,129.15 = 652,086.10 : x
  2. Step 2: Convert to fraction form
    652,086.10/978,129.15 = 652,086.10/x
  3. Step 3: Cross multiply
    652,086.10x = 978,129.15 × 652,086.10
  4. Step 4: Simplify right side
    652,086.10x = 637,824,422,719.82
  5. Step 5: Solve for x
    x = 637,824,422,719.82/652,086.10
  6. Step 6: Final answer
    x = 978,129.15

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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.