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Finding the Fourth Proportional to 412,846.80, 619,853.40 and 255,382.80

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Solution

The fourth proportional to 412,846.80, 619,853.40 and 255,382.80 is: 383,434.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,846.80 : 619,853.40 = 255,382.80 : x
  2. Step 2: Convert to fraction form
    412,846.80/619,853.40 = 255,382.80/x
  3. Step 3: Cross multiply
    412,846.80x = 619,853.40 × 255,382.80
  4. Step 4: Simplify right side
    412,846.80x = 158,299,896,881.52
  5. Step 5: Solve for x
    x = 158,299,896,881.52/412,846.80
  6. Step 6: Final answer
    x = 383,434.96

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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.