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Finding the Fourth Proportional to 490,742.40, 736,113.60 and 322,780.80

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Solution

The fourth proportional to 490,742.40, 736,113.60 and 322,780.80 is: 484,171.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,742.40 : 736,113.60 = 322,780.80 : x
  2. Step 2: Convert to fraction form
    490,742.40/736,113.60 = 322,780.80/x
  3. Step 3: Cross multiply
    490,742.40x = 736,113.60 × 322,780.80
  4. Step 4: Simplify right side
    490,742.40x = 237,603,336,698.88
  5. Step 5: Solve for x
    x = 237,603,336,698.88/490,742.40
  6. Step 6: Final answer
    x = 484,171.20

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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.