Home / 723,733.20-998,733.60-401,450.40

Finding the Fourth Proportional to 723,733.20, 998,733.60 and 401,450.40

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Solution

The fourth proportional to 723,733.20, 998,733.60 and 401,450.40 is: 553,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,733.20 : 998,733.60 = 401,450.40 : x
  2. Step 2: Convert to fraction form
    723,733.20/998,733.60 = 401,450.40/x
  3. Step 3: Cross multiply
    723,733.20x = 998,733.60 × 401,450.40
  4. Step 4: Simplify right side
    723,733.20x = 400,942,003,213.44
  5. Step 5: Solve for x
    x = 400,942,003,213.44/723,733.20
  6. Step 6: Final answer
    x = 553,991.45

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.