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Finding the Fourth Proportional to 867,972.60, 1,217,961 and 867,972.60

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Solution

The fourth proportional to 867,972.60, 1,217,961 and 867,972.60 is: 1,217,961

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,972.60 : 1,217,961 = 867,972.60 : x
  2. Step 2: Convert to fraction form
    867,972.60/1,217,961 = 867,972.60/x
  3. Step 3: Cross multiply
    867,972.60x = 1,217,961 × 867,972.60
  4. Step 4: Simplify right side
    867,972.60x = 1,057,156,775,868.60
  5. Step 5: Solve for x
    x = 1,057,156,775,868.60/867,972.60
  6. Step 6: Final answer
    x = 1,217,961

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.