Home / 872,620.80-1,308,542.40-399,451.20

Finding the Fourth Proportional to 872,620.80, 1,308,542.40 and 399,451.20

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Solution

The fourth proportional to 872,620.80, 1,308,542.40 and 399,451.20 is: 598,998.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,620.80 : 1,308,542.40 = 399,451.20 : x
  2. Step 2: Convert to fraction form
    872,620.80/1,308,542.40 = 399,451.20/x
  3. Step 3: Cross multiply
    872,620.80x = 1,308,542.40 × 399,451.20
  4. Step 4: Simplify right side
    872,620.80x = 522,698,831,930.88
  5. Step 5: Solve for x
    x = 522,698,831,930.88/872,620.80
  6. Step 6: Final answer
    x = 598,998.82

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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.