Home / 621,439.58-931,568.79-396,167.78

Finding the Fourth Proportional to 621,439.58, 931,568.79 and 396,167.78

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Solution

The fourth proportional to 621,439.58, 931,568.79 and 396,167.78 is: 593,875.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,439.58 : 931,568.79 = 396,167.78 : x
  2. Step 2: Convert to fraction form
    621,439.58/931,568.79 = 396,167.78/x
  3. Step 3: Cross multiply
    621,439.58x = 931,568.79 × 396,167.78
  4. Step 4: Simplify right side
    621,439.58x = 369,057,539,451.59
  5. Step 5: Solve for x
    x = 369,057,539,451.59/621,439.58
  6. Step 6: Final answer
    x = 593,875.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.