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Finding the Fourth Proportional to 412,910.80, 619,366.20 and 369,608.20

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Solution

The fourth proportional to 412,910.80, 619,366.20 and 369,608.20 is: 554,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,910.80 : 619,366.20 = 369,608.20 : x
  2. Step 2: Convert to fraction form
    412,910.80/619,366.20 = 369,608.20/x
  3. Step 3: Cross multiply
    412,910.80x = 619,366.20 × 369,608.20
  4. Step 4: Simplify right side
    412,910.80x = 228,922,826,322.84
  5. Step 5: Solve for x
    x = 228,922,826,322.84/412,910.80
  6. Step 6: Final answer
    x = 554,412.30

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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.