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Finding the Fourth Proportional to 652,228.60, 978,342.90 and 439,652.20

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Solution

The fourth proportional to 652,228.60, 978,342.90 and 439,652.20 is: 659,478.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,228.60 : 978,342.90 = 439,652.20 : x
  2. Step 2: Convert to fraction form
    652,228.60/978,342.90 = 439,652.20/x
  3. Step 3: Cross multiply
    652,228.60x = 978,342.90 × 439,652.20
  4. Step 4: Simplify right side
    652,228.60x = 430,130,608,339.38
  5. Step 5: Solve for x
    x = 430,130,608,339.38/652,228.60
  6. Step 6: Final answer
    x = 659,478.30

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Similar ratio
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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.