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Finding the Fourth Proportional to 1,738,947.42, 2,608,171.79 and 840,147.80

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Solution

The fourth proportional to 1,738,947.42, 2,608,171.79 and 840,147.80 is: 1,260,101.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,738,947.42 : 2,608,171.79 = 840,147.80 : x
  2. Step 2: Convert to fraction form
    1,738,947.42/2,608,171.79 = 840,147.80/x
  3. Step 3: Cross multiply
    1,738,947.42x = 2,608,171.79 × 840,147.80
  4. Step 4: Simplify right side
    1,738,947.42x = 2,191,249,774,148.96
  5. Step 5: Solve for x
    x = 2,191,249,774,148.96/1,738,947.42
  6. Step 6: Final answer
    x = 1,260,101.22

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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.