Home / 919,126.39-1,268,376.22-511,219.45

Finding the Fourth Proportional to 919,126.39, 1,268,376.22 and 511,219.45

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Solution

The fourth proportional to 919,126.39, 1,268,376.22 and 511,219.45 is: 705,472.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,126.39 : 1,268,376.22 = 511,219.45 : x
  2. Step 2: Convert to fraction form
    919,126.39/1,268,376.22 = 511,219.45/x
  3. Step 3: Cross multiply
    919,126.39x = 1,268,376.22 × 511,219.45
  4. Step 4: Simplify right side
    919,126.39x = 648,418,591,688.59
  5. Step 5: Solve for x
    x = 648,418,591,688.59/919,126.39
  6. Step 6: Final answer
    x = 705,472.72

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Double scale
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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.