Home / 1,191,431.40-1,787,147.10-403,463.40

Finding the Fourth Proportional to 1,191,431.40, 1,787,147.10 and 403,463.40

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Solution

The fourth proportional to 1,191,431.40, 1,787,147.10 and 403,463.40 is: 605,195.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,431.40 : 1,787,147.10 = 403,463.40 : x
  2. Step 2: Convert to fraction form
    1,191,431.40/1,787,147.10 = 403,463.40/x
  3. Step 3: Cross multiply
    1,191,431.40x = 1,787,147.10 × 403,463.40
  4. Step 4: Simplify right side
    1,191,431.40x = 721,048,445,266.14
  5. Step 5: Solve for x
    x = 721,048,445,266.14/1,191,431.40
  6. Step 6: Final answer
    x = 605,195.10

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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.