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Finding the Fourth Proportional to 984,652.10, 1,476,978.15 and 978,431.30

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Solution

The fourth proportional to 984,652.10, 1,476,978.15 and 978,431.30 is: 1,467,646.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,652.10 : 1,476,978.15 = 978,431.30 : x
  2. Step 2: Convert to fraction form
    984,652.10/1,476,978.15 = 978,431.30/x
  3. Step 3: Cross multiply
    984,652.10x = 1,476,978.15 × 978,431.30
  4. Step 4: Simplify right side
    984,652.10x = 1,445,121,651,376.10
  5. Step 5: Solve for x
    x = 1,445,121,651,376.10/984,652.10
  6. Step 6: Final answer
    x = 1,467,646.95

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Double scale
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Similar ratio
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1.5x scale

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.