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Finding the Fourth Proportional to 572,179.41, 787,807.22 and 485,953.29

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Solution

The fourth proportional to 572,179.41, 787,807.22 and 485,953.29 is: 669,086.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,179.41 : 787,807.22 = 485,953.29 : x
  2. Step 2: Convert to fraction form
    572,179.41/787,807.22 = 485,953.29/x
  3. Step 3: Cross multiply
    572,179.41x = 787,807.22 × 485,953.29
  4. Step 4: Simplify right side
    572,179.41x = 382,837,508,014.99
  5. Step 5: Solve for x
    x = 382,837,508,014.99/572,179.41
  6. Step 6: Final answer
    x = 669,086.48

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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.