Home / 458,829.86-687,468.08-280,965.39

Finding the Fourth Proportional to 458,829.86, 687,468.08 and 280,965.39

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Solution

The fourth proportional to 458,829.86, 687,468.08 and 280,965.39 is: 420,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,829.86 : 687,468.08 = 280,965.39 : x
  2. Step 2: Convert to fraction form
    458,829.86/687,468.08 = 280,965.39/x
  3. Step 3: Cross multiply
    458,829.86x = 687,468.08 × 280,965.39
  4. Step 4: Simplify right side
    458,829.86x = 193,154,735,804.92
  5. Step 5: Solve for x
    x = 193,154,735,804.92/458,829.86
  6. Step 6: Final answer
    x = 420,972.47

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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.