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Finding the Fourth Proportional to 659,163.57, 909,670.20 and 372,666.57

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Solution

The fourth proportional to 659,163.57, 909,670.20 and 372,666.57 is: 514,293.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,163.57 : 909,670.20 = 372,666.57 : x
  2. Step 2: Convert to fraction form
    659,163.57/909,670.20 = 372,666.57/x
  3. Step 3: Cross multiply
    659,163.57x = 909,670.20 × 372,666.57
  4. Step 4: Simplify right side
    659,163.57x = 339,003,673,265.21
  5. Step 5: Solve for x
    x = 339,003,673,265.21/659,163.57
  6. Step 6: Final answer
    x = 514,293.70

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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.