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Finding the Fourth Proportional to 628,395.72, 867,201.60 and 341,931.52

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Solution

The fourth proportional to 628,395.72, 867,201.60 and 341,931.52 is: 471,873.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,395.72 : 867,201.60 = 341,931.52 : x
  2. Step 2: Convert to fraction form
    628,395.72/867,201.60 = 341,931.52/x
  3. Step 3: Cross multiply
    628,395.72x = 867,201.60 × 341,931.52
  4. Step 4: Simplify right side
    628,395.72x = 296,523,561,234.43
  5. Step 5: Solve for x
    x = 296,523,561,234.43/628,395.72
  6. Step 6: Final answer
    x = 471,873.94

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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.