Home / 418,134.72-577,317.60-321,176.64

Finding the Fourth Proportional to 418,134.72, 577,317.60 and 321,176.64

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Solution

The fourth proportional to 418,134.72, 577,317.60 and 321,176.64 is: 443,447.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,134.72 : 577,317.60 = 321,176.64 : x
  2. Step 2: Convert to fraction form
    418,134.72/577,317.60 = 321,176.64/x
  3. Step 3: Cross multiply
    418,134.72x = 577,317.60 × 321,176.64
  4. Step 4: Simplify right side
    418,134.72x = 185,420,926,980.86
  5. Step 5: Solve for x
    x = 185,420,926,980.86/418,134.72
  6. Step 6: Final answer
    x = 443,447.81

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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.