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Finding the Fourth Proportional to 984,972.10, 1,477,458.15 and 978,751.30

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Solution

The fourth proportional to 984,972.10, 1,477,458.15 and 978,751.30 is: 1,468,126.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    984,972.10 : 1,477,458.15 = 978,751.30 : x
  2. Step 2: Convert to fraction form
    984,972.10/1,477,458.15 = 978,751.30/x
  3. Step 3: Cross multiply
    984,972.10x = 1,477,458.15 × 978,751.30
  4. Step 4: Simplify right side
    984,972.10x = 1,446,064,085,008.10
  5. Step 5: Solve for x
    x = 1,446,064,085,008.10/984,972.10
  6. Step 6: Final answer
    x = 1,468,126.95

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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.