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Finding the Fourth Proportional to 627,357.28, 865,756.56 and 340,879.72

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Solution

The fourth proportional to 627,357.28, 865,756.56 and 340,879.72 is: 470,415.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,357.28 : 865,756.56 = 340,879.72 : x
  2. Step 2: Convert to fraction form
    627,357.28/865,756.56 = 340,879.72/x
  3. Step 3: Cross multiply
    627,357.28x = 865,756.56 × 340,879.72
  4. Step 4: Simplify right side
    627,357.28x = 295,118,853,760.96
  5. Step 5: Solve for x
    x = 295,118,853,760.96/627,357.28
  6. Step 6: Final answer
    x = 470,415.92

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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.