Home / 910,863.80-1,257,102.86-528,890.57

Finding the Fourth Proportional to 910,863.80, 1,257,102.86 and 528,890.57

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Solution

The fourth proportional to 910,863.80, 1,257,102.86 and 528,890.57 is: 729,933.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,863.80 : 1,257,102.86 = 528,890.57 : x
  2. Step 2: Convert to fraction form
    910,863.80/1,257,102.86 = 528,890.57/x
  3. Step 3: Cross multiply
    910,863.80x = 1,257,102.86 × 528,890.57
  4. Step 4: Simplify right side
    910,863.80x = 664,869,839,244.06
  5. Step 5: Solve for x
    x = 664,869,839,244.06/910,863.80
  6. Step 6: Final answer
    x = 729,933.33

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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.