Home / 868,949.80-1,303,424.70-307,911.40

Finding the Fourth Proportional to 868,949.80, 1,303,424.70 and 307,911.40

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Solution

The fourth proportional to 868,949.80, 1,303,424.70 and 307,911.40 is: 461,867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,949.80 : 1,303,424.70 = 307,911.40 : x
  2. Step 2: Convert to fraction form
    868,949.80/1,303,424.70 = 307,911.40/x
  3. Step 3: Cross multiply
    868,949.80x = 1,303,424.70 × 307,911.40
  4. Step 4: Simplify right side
    868,949.80x = 401,339,324,171.58
  5. Step 5: Solve for x
    x = 401,339,324,171.58/868,949.80
  6. Step 6: Final answer
    x = 461,867.10

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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.