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Finding the Fourth Proportional to 659,006.25, 909,399.75 and 387,102

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Solution

The fourth proportional to 659,006.25, 909,399.75 and 387,102 is: 534,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,006.25 : 909,399.75 = 387,102 : x
  2. Step 2: Convert to fraction form
    659,006.25/909,399.75 = 387,102/x
  3. Step 3: Cross multiply
    659,006.25x = 909,399.75 × 387,102
  4. Step 4: Simplify right side
    659,006.25x = 352,030,462,024.50
  5. Step 5: Solve for x
    x = 352,030,462,024.50/659,006.25
  6. Step 6: Final answer
    x = 534,183.80

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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.