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Finding the Fourth Proportional to 628,031.70, 866,690.10 and 341,558.10

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Solution

The fourth proportional to 628,031.70, 866,690.10 and 341,558.10 is: 471,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,031.70 : 866,690.10 = 341,558.10 : x
  2. Step 2: Convert to fraction form
    628,031.70/866,690.10 = 341,558.10/x
  3. Step 3: Cross multiply
    628,031.70x = 866,690.10 × 341,558.10
  4. Step 4: Simplify right side
    628,031.70x = 296,025,023,844.81
  5. Step 5: Solve for x
    x = 296,025,023,844.81/628,031.70
  6. Step 6: Final answer
    x = 471,353.63

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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.