Home / 808,626.60-1,211,190.30-525,191.40

Finding the Fourth Proportional to 808,626.60, 1,211,190.30 and 525,191.40

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Solution

The fourth proportional to 808,626.60, 1,211,190.30 and 525,191.40 is: 786,650.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,626.60 : 1,211,190.30 = 525,191.40 : x
  2. Step 2: Convert to fraction form
    808,626.60/1,211,190.30 = 525,191.40/x
  3. Step 3: Cross multiply
    808,626.60x = 1,211,190.30 × 525,191.40
  4. Step 4: Simplify right side
    808,626.60x = 636,106,729,323.42
  5. Step 5: Solve for x
    x = 636,106,729,323.42/808,626.60
  6. Step 6: Final answer
    x = 786,650.76

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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.