Home / 1,386,370.80-2,079,539.68-439,749.72

Finding the Fourth Proportional to 1,386,370.80, 2,079,539.68 and 439,749.72

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Solution

The fourth proportional to 1,386,370.80, 2,079,539.68 and 439,749.72 is: 659,619.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,370.80 : 2,079,539.68 = 439,749.72 : x
  2. Step 2: Convert to fraction form
    1,386,370.80/2,079,539.68 = 439,749.72/x
  3. Step 3: Cross multiply
    1,386,370.80x = 2,079,539.68 × 439,749.72
  4. Step 4: Simplify right side
    1,386,370.80x = 914,476,992,008.89
  5. Step 5: Solve for x
    x = 914,476,992,008.89/1,386,370.80
  6. Step 6: Final answer
    x = 659,619.34

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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.