Home / 639,089.76-881,914.32-352,563.60

Finding the Fourth Proportional to 639,089.76, 881,914.32 and 352,563.60

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Solution

The fourth proportional to 639,089.76, 881,914.32 and 352,563.60 is: 486,521.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,089.76 : 881,914.32 = 352,563.60 : x
  2. Step 2: Convert to fraction form
    639,089.76/881,914.32 = 352,563.60/x
  3. Step 3: Cross multiply
    639,089.76x = 881,914.32 × 352,563.60
  4. Step 4: Simplify right side
    639,089.76x = 310,930,887,550.75
  5. Step 5: Solve for x
    x = 310,930,887,550.75/639,089.76
  6. Step 6: Final answer
    x = 486,521.47

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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.