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Finding the Fourth Proportional to 553,028.22, 763,170.48 and 311,310.04

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Solution

The fourth proportional to 553,028.22, 763,170.48 and 311,310.04 is: 429,603.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,028.22 : 763,170.48 = 311,310.04 : x
  2. Step 2: Convert to fraction form
    553,028.22/763,170.48 = 311,310.04/x
  3. Step 3: Cross multiply
    553,028.22x = 763,170.48 × 311,310.04
  4. Step 4: Simplify right side
    553,028.22x = 237,582,632,655.62
  5. Step 5: Solve for x
    x = 237,582,632,655.62/553,028.22
  6. Step 6: Final answer
    x = 429,603.09

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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.