Home / 621,828.32-858,046.80-392,299.04

Finding the Fourth Proportional to 621,828.32, 858,046.80 and 392,299.04

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Solution

The fourth proportional to 621,828.32, 858,046.80 and 392,299.04 is: 541,324.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,828.32 : 858,046.80 = 392,299.04 : x
  2. Step 2: Convert to fraction form
    621,828.32/858,046.80 = 392,299.04/x
  3. Step 3: Cross multiply
    621,828.32x = 858,046.80 × 392,299.04
  4. Step 4: Simplify right side
    621,828.32x = 336,610,935,915.07
  5. Step 5: Solve for x
    x = 336,610,935,915.07/621,828.32
  6. Step 6: Final answer
    x = 541,324.55

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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.