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Finding the Fourth Proportional to 1,353,763.67, 1,868,151.56 and 741,905.30

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Solution

The fourth proportional to 1,353,763.67, 1,868,151.56 and 741,905.30 is: 1,023,806.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,763.67 : 1,868,151.56 = 741,905.30 : x
  2. Step 2: Convert to fraction form
    1,353,763.67/1,868,151.56 = 741,905.30/x
  3. Step 3: Cross multiply
    1,353,763.67x = 1,868,151.56 × 741,905.30
  4. Step 4: Simplify right side
    1,353,763.67x = 1,385,991,544,528.12
  5. Step 5: Solve for x
    x = 1,385,991,544,528.12/1,353,763.67
  6. Step 6: Final answer
    x = 1,023,806.13

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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.