Home / 969,920.77-1,338,531.80-540,200.78

Finding the Fourth Proportional to 969,920.77, 1,338,531.80 and 540,200.78

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Solution

The fourth proportional to 969,920.77, 1,338,531.80 and 540,200.78 is: 745,499.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,920.77 : 1,338,531.80 = 540,200.78 : x
  2. Step 2: Convert to fraction form
    969,920.77/1,338,531.80 = 540,200.78/x
  3. Step 3: Cross multiply
    969,920.77x = 1,338,531.80 × 540,200.78
  4. Step 4: Simplify right side
    969,920.77x = 723,075,922,414.80
  5. Step 5: Solve for x
    x = 723,075,922,414.80/969,920.77
  6. Step 6: Final answer
    x = 745,499.99

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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.