Home / 813,194.79-1,220,909.39-414,103.74

Finding the Fourth Proportional to 813,194.79, 1,220,909.39 and 414,103.74

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Solution

The fourth proportional to 813,194.79, 1,220,909.39 and 414,103.74 is: 621,724.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,194.79 : 1,220,909.39 = 414,103.74 : x
  2. Step 2: Convert to fraction form
    813,194.79/1,220,909.39 = 414,103.74/x
  3. Step 3: Cross multiply
    813,194.79x = 1,220,909.39 × 414,103.74
  4. Step 4: Simplify right side
    813,194.79x = 505,583,142,529.60
  5. Step 5: Solve for x
    x = 505,583,142,529.60/813,194.79
  6. Step 6: Final answer
    x = 621,724.52

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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.