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Finding the Fourth Proportional to 553,620.53, 763,996.32 and 298,971.69

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Solution

The fourth proportional to 553,620.53, 763,996.32 and 298,971.69 is: 412,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,620.53 : 763,996.32 = 298,971.69 : x
  2. Step 2: Convert to fraction form
    553,620.53/763,996.32 = 298,971.69/x
  3. Step 3: Cross multiply
    553,620.53x = 763,996.32 × 298,971.69
  4. Step 4: Simplify right side
    553,620.53x = 228,413,270,944.18
  5. Step 5: Solve for x
    x = 228,413,270,944.18/553,620.53
  6. Step 6: Final answer
    x = 412,580.93

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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.