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Finding the Fourth Proportional to 553,620.71, 763,996.58 and 298,971.88

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Solution

The fourth proportional to 553,620.71, 763,996.58 and 298,971.88 is: 412,581.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,620.71 : 763,996.58 = 298,971.88 : x
  2. Step 2: Convert to fraction form
    553,620.71/763,996.58 = 298,971.88/x
  3. Step 3: Cross multiply
    553,620.71x = 763,996.58 × 298,971.88
  4. Step 4: Simplify right side
    553,620.71x = 228,413,491,552.46
  5. Step 5: Solve for x
    x = 228,413,491,552.46/553,620.71
  6. Step 6: Final answer
    x = 412,581.19

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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.