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Finding the Fourth Proportional to 1,396,747.23, 1,927,367.56 and 784,802.76

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Solution

The fourth proportional to 1,396,747.23, 1,927,367.56 and 784,802.76 is: 1,082,947.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,747.23 : 1,927,367.56 = 784,802.76 : x
  2. Step 2: Convert to fraction form
    1,396,747.23/1,927,367.56 = 784,802.76/x
  3. Step 3: Cross multiply
    1,396,747.23x = 1,927,367.56 × 784,802.76
  4. Step 4: Simplify right side
    1,396,747.23x = 1,512,603,380,622.47
  5. Step 5: Solve for x
    x = 1,512,603,380,622.47/1,396,747.23
  6. Step 6: Final answer
    x = 1,082,947.11

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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.