Home / 905,863.20-1,359,572.40-401,200.80

Finding the Fourth Proportional to 905,863.20, 1,359,572.40 and 401,200.80

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Solution

The fourth proportional to 905,863.20, 1,359,572.40 and 401,200.80 is: 602,145.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,863.20 : 1,359,572.40 = 401,200.80 : x
  2. Step 2: Convert to fraction form
    905,863.20/1,359,572.40 = 401,200.80/x
  3. Step 3: Cross multiply
    905,863.20x = 1,359,572.40 × 401,200.80
  4. Step 4: Simplify right side
    905,863.20x = 545,461,534,537.92
  5. Step 5: Solve for x
    x = 545,461,534,537.92/905,863.20
  6. Step 6: Final answer
    x = 602,145.59

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Double scale
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Similar ratio
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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.