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Finding the Fourth Proportional to 625,719.48, 863,487.68 and 353,840.76

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Solution

The fourth proportional to 625,719.48, 863,487.68 and 353,840.76 is: 488,297.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,719.48 : 863,487.68 = 353,840.76 : x
  2. Step 2: Convert to fraction form
    625,719.48/863,487.68 = 353,840.76/x
  3. Step 3: Cross multiply
    625,719.48x = 863,487.68 × 353,840.76
  4. Step 4: Simplify right side
    625,719.48x = 305,537,135,172.63
  5. Step 5: Solve for x
    x = 305,537,135,172.63/625,719.48
  6. Step 6: Final answer
    x = 488,297.30

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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.