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Finding the Fourth Proportional to 628,358.64, 867,109 and 341,879.86

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Solution

The fourth proportional to 628,358.64, 867,109 and 341,879.86 is: 471,780.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,358.64 : 867,109 = 341,879.86 : x
  2. Step 2: Convert to fraction form
    628,358.64/867,109 = 341,879.86/x
  3. Step 3: Cross multiply
    628,358.64x = 867,109 × 341,879.86
  4. Step 4: Simplify right side
    628,358.64x = 296,447,103,524.74
  5. Step 5: Solve for x
    x = 296,447,103,524.74/628,358.64
  6. Step 6: Final answer
    x = 471,780.10

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.