Home / 1,289,022.52-1,778,901.62-881,978.12

Finding the Fourth Proportional to 1,289,022.52, 1,778,901.62 and 881,978.12

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Solution

The fourth proportional to 1,289,022.52, 1,778,901.62 and 881,978.12 is: 1,217,164.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,022.52 : 1,778,901.62 = 881,978.12 : x
  2. Step 2: Convert to fraction form
    1,289,022.52/1,778,901.62 = 881,978.12/x
  3. Step 3: Cross multiply
    1,289,022.52x = 1,778,901.62 × 881,978.12
  4. Step 4: Simplify right side
    1,289,022.52x = 1,568,952,306,472.55
  5. Step 5: Solve for x
    x = 1,568,952,306,472.55/1,289,022.52
  6. Step 6: Final answer
    x = 1,217,164.39

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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.