Home / 621,437.58-931,565.79-396,165.78

Finding the Fourth Proportional to 621,437.58, 931,565.79 and 396,165.78

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Solution

The fourth proportional to 621,437.58, 931,565.79 and 396,165.78 is: 593,872.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,437.58 : 931,565.79 = 396,165.78 : x
  2. Step 2: Convert to fraction form
    621,437.58/931,565.79 = 396,165.78/x
  3. Step 3: Cross multiply
    621,437.58x = 931,565.79 × 396,165.78
  4. Step 4: Simplify right side
    621,437.58x = 369,054,487,816.67
  5. Step 5: Solve for x
    x = 369,054,487,816.67/621,437.58
  6. Step 6: Final answer
    x = 593,872.18

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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.