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Finding the Fourth Proportional to 628,357.64, 867,107.63 and 341,878.86

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Solution

The fourth proportional to 628,357.64, 867,107.63 and 341,878.86 is: 471,778.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,357.64 : 867,107.63 = 341,878.86 : x
  2. Step 2: Convert to fraction form
    628,357.64/867,107.63 = 341,878.86/x
  3. Step 3: Cross multiply
    628,357.64x = 867,107.63 × 341,878.86
  4. Step 4: Simplify right side
    628,357.64x = 296,445,766,332.31
  5. Step 5: Solve for x
    x = 296,445,766,332.31/628,357.64
  6. Step 6: Final answer
    x = 471,778.73

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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.