Home / 1,261,398.20-1,742,177.58-918,760.64

Finding the Fourth Proportional to 1,261,398.20, 1,742,177.58 and 918,760.64

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Solution

The fourth proportional to 1,261,398.20, 1,742,177.58 and 918,760.64 is: 1,268,944.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,398.20 : 1,742,177.58 = 918,760.64 : x
  2. Step 2: Convert to fraction form
    1,261,398.20/1,742,177.58 = 918,760.64/x
  3. Step 3: Cross multiply
    1,261,398.20x = 1,742,177.58 × 918,760.64
  4. Step 4: Simplify right side
    1,261,398.20x = 1,600,644,188,394.45
  5. Step 5: Solve for x
    x = 1,600,644,188,394.45/1,261,398.20
  6. Step 6: Final answer
    x = 1,268,944.41

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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.