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Finding the Fourth Proportional to 628,112.52, 866,509.38 and 373,318.92

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Solution

The fourth proportional to 628,112.52, 866,509.38 and 373,318.92 is: 515,010.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,112.52 : 866,509.38 = 373,318.92 : x
  2. Step 2: Convert to fraction form
    628,112.52/866,509.38 = 373,318.92/x
  3. Step 3: Cross multiply
    628,112.52x = 866,509.38 × 373,318.92
  4. Step 4: Simplify right side
    628,112.52x = 323,484,345,911.47
  5. Step 5: Solve for x
    x = 323,484,345,911.47/628,112.52
  6. Step 6: Final answer
    x = 515,010.19

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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.