Home / 1,221,928.74-1,686,217.50-678,088.26

Finding the Fourth Proportional to 1,221,928.74, 1,686,217.50 and 678,088.26

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Solution

The fourth proportional to 1,221,928.74, 1,686,217.50 and 678,088.26 is: 935,737.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,928.74 : 1,686,217.50 = 678,088.26 : x
  2. Step 2: Convert to fraction form
    1,221,928.74/1,686,217.50 = 678,088.26/x
  3. Step 3: Cross multiply
    1,221,928.74x = 1,686,217.50 × 678,088.26
  4. Step 4: Simplify right side
    1,221,928.74x = 1,143,404,290,556.55
  5. Step 5: Solve for x
    x = 1,143,404,290,556.55/1,221,928.74
  6. Step 6: Final answer
    x = 935,737.29

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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.