Home / 813,209.92-1,122,236.33-450,639.85

Finding the Fourth Proportional to 813,209.92, 1,122,236.33 and 450,639.85

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Solution

The fourth proportional to 813,209.92, 1,122,236.33 and 450,639.85 is: 621,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,209.92 : 1,122,236.33 = 450,639.85 : x
  2. Step 2: Convert to fraction form
    813,209.92/1,122,236.33 = 450,639.85/x
  3. Step 3: Cross multiply
    813,209.92x = 1,122,236.33 × 450,639.85
  4. Step 4: Simplify right side
    813,209.92x = 505,724,411,415.75
  5. Step 5: Solve for x
    x = 505,724,411,415.75/813,209.92
  6. Step 6: Final answer
    x = 621,886.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.