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Finding the Fourth Proportional to 625,401.62, 863,146.83 and 395,980.26

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Solution

The fourth proportional to 625,401.62, 863,146.83 and 395,980.26 is: 546,511.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,401.62 : 863,146.83 = 395,980.26 : x
  2. Step 2: Convert to fraction form
    625,401.62/863,146.83 = 395,980.26/x
  3. Step 3: Cross multiply
    625,401.62x = 863,146.83 × 395,980.26
  4. Step 4: Simplify right side
    625,401.62x = 341,789,106,161.58
  5. Step 5: Solve for x
    x = 341,789,106,161.58/625,401.62
  6. Step 6: Final answer
    x = 546,511.39

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Double scale
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Similar ratio
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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.