Home / 1,338,688.72-2,008,033.80-840,402.64

Finding the Fourth Proportional to 1,338,688.72, 2,008,033.80 and 840,402.64

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Solution

The fourth proportional to 1,338,688.72, 2,008,033.80 and 840,402.64 is: 1,260,604.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338,688.72 : 2,008,033.80 = 840,402.64 : x
  2. Step 2: Convert to fraction form
    1,338,688.72/2,008,033.80 = 840,402.64/x
  3. Step 3: Cross multiply
    1,338,688.72x = 2,008,033.80 × 840,402.64
  4. Step 4: Simplify right side
    1,338,688.72x = 1,687,556,906,729.23
  5. Step 5: Solve for x
    x = 1,687,556,906,729.23/1,338,688.72
  6. Step 6: Final answer
    x = 1,260,604.41

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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.