Home / 621,976.09-858,591.84-418,145.23

Finding the Fourth Proportional to 621,976.09, 858,591.84 and 418,145.23

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Solution

The fourth proportional to 621,976.09, 858,591.84 and 418,145.23 is: 577,218.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,976.09 : 858,591.84 = 418,145.23 : x
  2. Step 2: Convert to fraction form
    621,976.09/858,591.84 = 418,145.23/x
  3. Step 3: Cross multiply
    621,976.09x = 858,591.84 × 418,145.23
  4. Step 4: Simplify right side
    621,976.09x = 359,016,082,412.92
  5. Step 5: Solve for x
    x = 359,016,082,412.92/621,976.09
  6. Step 6: Final answer
    x = 577,218.46

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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.