Home / 1,123,538.40-1,685,113.20-413,200.80

Finding the Fourth Proportional to 1,123,538.40, 1,685,113.20 and 413,200.80

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Solution

The fourth proportional to 1,123,538.40, 1,685,113.20 and 413,200.80 is: 619,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,538.40 : 1,685,113.20 = 413,200.80 : x
  2. Step 2: Convert to fraction form
    1,123,538.40/1,685,113.20 = 413,200.80/x
  3. Step 3: Cross multiply
    1,123,538.40x = 1,685,113.20 × 413,200.80
  4. Step 4: Simplify right side
    1,123,538.40x = 696,290,122,330.56
  5. Step 5: Solve for x
    x = 696,290,122,330.56/1,123,538.40
  6. Step 6: Final answer
    x = 619,729.71

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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.