Home / 988,738.40-1,483,107.60-323,890.40

Finding the Fourth Proportional to 988,738.40, 1,483,107.60 and 323,890.40

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Solution

The fourth proportional to 988,738.40, 1,483,107.60 and 323,890.40 is: 485,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,738.40 : 1,483,107.60 = 323,890.40 : x
  2. Step 2: Convert to fraction form
    988,738.40/1,483,107.60 = 323,890.40/x
  3. Step 3: Cross multiply
    988,738.40x = 1,483,107.60 × 323,890.40
  4. Step 4: Simplify right side
    988,738.40x = 480,364,313,807.04
  5. Step 5: Solve for x
    x = 480,364,313,807.04/988,738.40
  6. Step 6: Final answer
    x = 485,835.60

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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.