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Finding the Fourth Proportional to 769,991.40, 1,154,987.10 and 201,371.40

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Solution

The fourth proportional to 769,991.40, 1,154,987.10 and 201,371.40 is: 302,057.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,991.40 : 1,154,987.10 = 201,371.40 : x
  2. Step 2: Convert to fraction form
    769,991.40/1,154,987.10 = 201,371.40/x
  3. Step 3: Cross multiply
    769,991.40x = 1,154,987.10 × 201,371.40
  4. Step 4: Simplify right side
    769,991.40x = 232,581,369,308.94
  5. Step 5: Solve for x
    x = 232,581,369,308.94/769,991.40
  6. Step 6: Final answer
    x = 302,057.10

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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.