Home / 839,111.40-1,158,546.24-645,177.96

Finding the Fourth Proportional to 839,111.40, 1,158,546.24 and 645,177.96

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Solution

The fourth proportional to 839,111.40, 1,158,546.24 and 645,177.96 is: 890,785.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,111.40 : 1,158,546.24 = 645,177.96 : x
  2. Step 2: Convert to fraction form
    839,111.40/1,158,546.24 = 645,177.96/x
  3. Step 3: Cross multiply
    839,111.40x = 1,158,546.24 × 645,177.96
  4. Step 4: Simplify right side
    839,111.40x = 747,468,499,688.87
  5. Step 5: Solve for x
    x = 747,468,499,688.87/839,111.40
  6. Step 6: Final answer
    x = 890,785.78

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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.