Home / 969,841.38-1,338,422.63-540,121.51

Finding the Fourth Proportional to 969,841.38, 1,338,422.63 and 540,121.51

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Solution

The fourth proportional to 969,841.38, 1,338,422.63 and 540,121.51 is: 745,390.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,841.38 : 1,338,422.63 = 540,121.51 : x
  2. Step 2: Convert to fraction form
    969,841.38/1,338,422.63 = 540,121.51/x
  3. Step 3: Cross multiply
    969,841.38x = 1,338,422.63 × 540,121.51
  4. Step 4: Simplify right side
    969,841.38x = 722,910,851,933.77
  5. Step 5: Solve for x
    x = 722,910,851,933.77/969,841.38
  6. Step 6: Final answer
    x = 745,390.81

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1.5x scale

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.