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Finding the Fourth Proportional to 723,405.06, 998,310.96 and 401,128.74

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Solution

The fourth proportional to 723,405.06, 998,310.96 and 401,128.74 is: 553,564.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,405.06 : 998,310.96 = 401,128.74 : x
  2. Step 2: Convert to fraction form
    723,405.06/998,310.96 = 401,128.74/x
  3. Step 3: Cross multiply
    723,405.06x = 998,310.96 × 401,128.74
  4. Step 4: Simplify right side
    723,405.06x = 400,451,217,512.99
  5. Step 5: Solve for x
    x = 400,451,217,512.99/723,405.06
  6. Step 6: Final answer
    x = 553,564.30

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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.