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Finding the Fourth Proportional to 666,342, 919,565.28 and 364,542.48

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Solution

The fourth proportional to 666,342, 919,565.28 and 364,542.48 is: 503,075.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,342 : 919,565.28 = 364,542.48 : x
  2. Step 2: Convert to fraction form
    666,342/919,565.28 = 364,542.48/x
  3. Step 3: Cross multiply
    666,342x = 919,565.28 × 364,542.48
  4. Step 4: Simplify right side
    666,342x = 335,220,607,693.09
  5. Step 5: Solve for x
    x = 335,220,607,693.09/666,342
  6. Step 6: Final answer
    x = 503,075.91

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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.