Home / 807,816.40-1,211,724.60-409,685.20

Finding the Fourth Proportional to 807,816.40, 1,211,724.60 and 409,685.20

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Solution

The fourth proportional to 807,816.40, 1,211,724.60 and 409,685.20 is: 614,527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,816.40 : 1,211,724.60 = 409,685.20 : x
  2. Step 2: Convert to fraction form
    807,816.40/1,211,724.60 = 409,685.20/x
  3. Step 3: Cross multiply
    807,816.40x = 1,211,724.60 × 409,685.20
  4. Step 4: Simplify right side
    807,816.40x = 496,425,635,095.92
  5. Step 5: Solve for x
    x = 496,425,635,095.92/807,816.40
  6. Step 6: Final answer
    x = 614,527.80

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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.