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Finding the Fourth Proportional to 661,029.90, 912,165.48 and 366,661.86

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Solution

The fourth proportional to 661,029.90, 912,165.48 and 366,661.86 is: 505,962.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,029.90 : 912,165.48 = 366,661.86 : x
  2. Step 2: Convert to fraction form
    661,029.90/912,165.48 = 366,661.86/x
  3. Step 3: Cross multiply
    661,029.90x = 912,165.48 × 366,661.86
  4. Step 4: Simplify right side
    661,029.90x = 334,456,291,524.59
  5. Step 5: Solve for x
    x = 334,456,291,524.59/661,029.90
  6. Step 6: Final answer
    x = 505,962.43

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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.