Home / 778,619.88-1,074,474.18-439,119.72

Finding the Fourth Proportional to 778,619.88, 1,074,474.18 and 439,119.72

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Solution

The fourth proportional to 778,619.88, 1,074,474.18 and 439,119.72 is: 605,973.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,619.88 : 1,074,474.18 = 439,119.72 : x
  2. Step 2: Convert to fraction form
    778,619.88/1,074,474.18 = 439,119.72/x
  3. Step 3: Cross multiply
    778,619.88x = 1,074,474.18 × 439,119.72
  4. Step 4: Simplify right side
    778,619.88x = 471,822,801,068.83
  5. Step 5: Solve for x
    x = 471,822,801,068.83/778,619.88
  6. Step 6: Final answer
    x = 605,973.23

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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.