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Finding the Fourth Proportional to 625,507.44, 863,280.20 and 349,880.60

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Solution

The fourth proportional to 625,507.44, 863,280.20 and 349,880.60 is: 482,879.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,507.44 : 863,280.20 = 349,880.60 : x
  2. Step 2: Convert to fraction form
    625,507.44/863,280.20 = 349,880.60/x
  3. Step 3: Cross multiply
    625,507.44x = 863,280.20 × 349,880.60
  4. Step 4: Simplify right side
    625,507.44x = 302,044,994,344.12
  5. Step 5: Solve for x
    x = 302,044,994,344.12/625,507.44
  6. Step 6: Final answer
    x = 482,879.94

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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.