Home / 910,361.57-1,256,724.11-528,314.54

Finding the Fourth Proportional to 910,361.57, 1,256,724.11 and 528,314.54

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Solution

The fourth proportional to 910,361.57, 1,256,724.11 and 528,314.54 is: 729,320.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,361.57 : 1,256,724.11 = 528,314.54 : x
  2. Step 2: Convert to fraction form
    910,361.57/1,256,724.11 = 528,314.54/x
  3. Step 3: Cross multiply
    910,361.57x = 1,256,724.11 × 528,314.54
  4. Step 4: Simplify right side
    910,361.57x = 663,945,615,118.73
  5. Step 5: Solve for x
    x = 663,945,615,118.73/910,361.57
  6. Step 6: Final answer
    x = 729,320.79

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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.