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Finding the Fourth Proportional to 556,408.20, 835,487.10 and 320,212.20

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Solution

The fourth proportional to 556,408.20, 835,487.10 and 320,212.20 is: 480,821.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,408.20 : 835,487.10 = 320,212.20 : x
  2. Step 2: Convert to fraction form
    556,408.20/835,487.10 = 320,212.20/x
  3. Step 3: Cross multiply
    556,408.20x = 835,487.10 × 320,212.20
  4. Step 4: Simplify right side
    556,408.20x = 267,533,162,362.62
  5. Step 5: Solve for x
    x = 267,533,162,362.62/556,408.20
  6. Step 6: Final answer
    x = 480,821.75

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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.