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Finding the Fourth Proportional to 553,040.52, 763,431.81 and 371,857.47

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Solution

The fourth proportional to 553,040.52, 763,431.81 and 371,857.47 is: 513,321.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,040.52 : 763,431.81 = 371,857.47 : x
  2. Step 2: Convert to fraction form
    553,040.52/763,431.81 = 371,857.47/x
  3. Step 3: Cross multiply
    553,040.52x = 763,431.81 × 371,857.47
  4. Step 4: Simplify right side
    553,040.52x = 283,887,821,384.12
  5. Step 5: Solve for x
    x = 283,887,821,384.12/553,040.52
  6. Step 6: Final answer
    x = 513,321.92

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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.