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Finding the Fourth Proportional to 652,079.56, 978,007.20 and 172,312.60

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Solution

The fourth proportional to 652,079.56, 978,007.20 and 172,312.60 is: 258,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,079.56 : 978,007.20 = 172,312.60 : x
  2. Step 2: Convert to fraction form
    652,079.56/978,007.20 = 172,312.60/x
  3. Step 3: Cross multiply
    652,079.56x = 978,007.20 × 172,312.60
  4. Step 4: Simplify right side
    652,079.56x = 168,522,963,450.72
  5. Step 5: Solve for x
    x = 168,522,963,450.72/652,079.56
  6. Step 6: Final answer
    x = 258,439.27

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