Home / 621,438.58-931,567.29-396,166.78

Finding the Fourth Proportional to 621,438.58, 931,567.29 and 396,166.78

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Solution

The fourth proportional to 621,438.58, 931,567.29 and 396,166.78 is: 593,873.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,438.58 : 931,567.29 = 396,166.78 : x
  2. Step 2: Convert to fraction form
    621,438.58/931,567.29 = 396,166.78/x
  3. Step 3: Cross multiply
    621,438.58x = 931,567.29 × 396,166.78
  4. Step 4: Simplify right side
    621,438.58x = 369,056,013,632.63
  5. Step 5: Solve for x
    x = 369,056,013,632.63/621,438.58
  6. Step 6: Final answer
    x = 593,873.68

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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.