Home / 621,972.43-858,586.78-418,141.57

Finding the Fourth Proportional to 621,972.43, 858,586.78 and 418,141.57

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Solution

The fourth proportional to 621,972.43, 858,586.78 and 418,141.57 is: 577,213.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,972.43 : 858,586.78 = 418,141.57 : x
  2. Step 2: Convert to fraction form
    621,972.43/858,586.78 = 418,141.57/x
  3. Step 3: Cross multiply
    621,972.43x = 858,586.78 × 418,141.57
  4. Step 4: Simplify right side
    621,972.43x = 359,010,819,877.51
  5. Step 5: Solve for x
    x = 359,010,819,877.51/621,972.43
  6. Step 6: Final answer
    x = 577,213.40

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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.