Home / 627,372,643.40-865,769,470.02-345,109,021.72

Finding the Fourth Proportional to 627,372,643.40, 865,769,470.02 and 345,109,021.72

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Solution

The fourth proportional to 627,372,643.40, 865,769,470.02 and 345,109,021.72 is: 476,247,821.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,372,643.40 : 865,769,470.02 = 345,109,021.72 : x
  2. Step 2: Convert to fraction form
    627,372,643.40/865,769,470.02 = 345,109,021.72/x
  3. Step 3: Cross multiply
    627,372,643.40x = 865,769,470.02 × 345,109,021.72
  4. Step 4: Simplify right side
    627,372,643.40x = 298,784,854,833,645,056
  5. Step 5: Solve for x
    x = 298,784,854,833,645,056/627,372,643.40
  6. Step 6: Final answer
    x = 476,247,821.73

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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.