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Finding the Fourth Proportional to 387,694.40, 580,608.48 and 262,656.32

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Solution

The fourth proportional to 387,694.40, 580,608.48 and 262,656.32 is: 393,352.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,694.40 : 580,608.48 = 262,656.32 : x
  2. Step 2: Convert to fraction form
    387,694.40/580,608.48 = 262,656.32/x
  3. Step 3: Cross multiply
    387,694.40x = 580,608.48 × 262,656.32
  4. Step 4: Simplify right side
    387,694.40x = 152,500,486,717.59
  5. Step 5: Solve for x
    x = 152,500,486,717.59/387,694.40
  6. Step 6: Final answer
    x = 393,352.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.