Home / 639,021.60-881,849.88-352,542.36

Finding the Fourth Proportional to 639,021.60, 881,849.88 and 352,542.36

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Solution

The fourth proportional to 639,021.60, 881,849.88 and 352,542.36 is: 486,508.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,021.60 : 881,849.88 = 352,542.36 : x
  2. Step 2: Convert to fraction form
    639,021.60/881,849.88 = 352,542.36/x
  3. Step 3: Cross multiply
    639,021.60x = 881,849.88 × 352,542.36
  4. Step 4: Simplify right side
    639,021.60x = 310,889,437,860.92
  5. Step 5: Solve for x
    x = 310,889,437,860.92/639,021.60
  6. Step 6: Final answer
    x = 486,508.50

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1.5x scale

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.