Home / 821,761.95-1,134,009.73-459,188.78

Finding the Fourth Proportional to 821,761.95, 1,134,009.73 and 459,188.78

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Solution

The fourth proportional to 821,761.95, 1,134,009.73 and 459,188.78 is: 633,668.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,761.95 : 1,134,009.73 = 459,188.78 : x
  2. Step 2: Convert to fraction form
    821,761.95/1,134,009.73 = 459,188.78/x
  3. Step 3: Cross multiply
    821,761.95x = 1,134,009.73 × 459,188.78
  4. Step 4: Simplify right side
    821,761.95x = 520,724,551,139.43
  5. Step 5: Solve for x
    x = 520,724,551,139.43/821,761.95
  6. Step 6: Final answer
    x = 633,668.37

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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.