Home / 986,015.49-1,479,244.76-312,137.20

Finding the Fourth Proportional to 986,015.49, 1,479,244.76 and 312,137.20

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Solution

The fourth proportional to 986,015.49, 1,479,244.76 and 312,137.20 is: 468,275.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,015.49 : 1,479,244.76 = 312,137.20 : x
  2. Step 2: Convert to fraction form
    986,015.49/1,479,244.76 = 312,137.20/x
  3. Step 3: Cross multiply
    986,015.49x = 1,479,244.76 × 312,137.20
  4. Step 4: Simplify right side
    986,015.49x = 461,727,317,501.07
  5. Step 5: Solve for x
    x = 461,727,317,501.07/986,015.49
  6. Step 6: Final answer
    x = 468,275.93

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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.