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Finding the Fourth Proportional to 911,830.75, 1,258,446.72 and 881,887.60

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Solution

The fourth proportional to 911,830.75, 1,258,446.72 and 881,887.60 is: 1,217,121.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,830.75 : 1,258,446.72 = 881,887.60 : x
  2. Step 2: Convert to fraction form
    911,830.75/1,258,446.72 = 881,887.60/x
  3. Step 3: Cross multiply
    911,830.75x = 1,258,446.72 × 881,887.60
  4. Step 4: Simplify right side
    911,830.75x = 1,109,808,557,628.67
  5. Step 5: Solve for x
    x = 1,109,808,557,628.67/911,830.75
  6. Step 6: Final answer
    x = 1,217,121.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.