Home / 621,974.10-858,589.08-418,143.24

Finding the Fourth Proportional to 621,974.10, 858,589.08 and 418,143.24

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Solution

The fourth proportional to 621,974.10, 858,589.08 and 418,143.24 is: 577,215.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,974.10 : 858,589.08 = 418,143.24 : x
  2. Step 2: Convert to fraction form
    621,974.10/858,589.08 = 418,143.24/x
  3. Step 3: Cross multiply
    621,974.10x = 858,589.08 × 418,143.24
  4. Step 4: Simplify right side
    621,974.10x = 359,013,219,739.82
  5. Step 5: Solve for x
    x = 359,013,219,739.82/621,974.10
  6. Step 6: Final answer
    x = 577,215.71

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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.