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Finding the Fourth Proportional to 641,644.37, 885,564.15 and 369,660.53

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Solution

The fourth proportional to 641,644.37, 885,564.15 and 369,660.53 is: 510,186.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,644.37 : 885,564.15 = 369,660.53 : x
  2. Step 2: Convert to fraction form
    641,644.37/885,564.15 = 369,660.53/x
  3. Step 3: Cross multiply
    641,644.37x = 885,564.15 × 369,660.53
  4. Step 4: Simplify right side
    641,644.37x = 327,358,113,038.00
  5. Step 5: Solve for x
    x = 327,358,113,038.00/641,644.37
  6. Step 6: Final answer
    x = 510,186.22

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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.