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Finding the Fourth Proportional to 688,493.80, 950,068.26 and 386,629.48

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Solution

The fourth proportional to 688,493.80, 950,068.26 and 386,629.48 is: 533,518.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,493.80 : 950,068.26 = 386,629.48 : x
  2. Step 2: Convert to fraction form
    688,493.80/950,068.26 = 386,629.48/x
  3. Step 3: Cross multiply
    688,493.80x = 950,068.26 × 386,629.48
  4. Step 4: Simplify right side
    688,493.80x = 367,324,397,328.31
  5. Step 5: Solve for x
    x = 367,324,397,328.31/688,493.80
  6. Step 6: Final answer
    x = 533,518.82

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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.