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Finding the Fourth Proportional to 666,001.31, 919,190.34 and 495,054.45

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Solution

The fourth proportional to 666,001.31, 919,190.34 and 495,054.45 is: 683,255.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,001.31 : 919,190.34 = 495,054.45 : x
  2. Step 2: Convert to fraction form
    666,001.31/919,190.34 = 495,054.45/x
  3. Step 3: Cross multiply
    666,001.31x = 919,190.34 × 495,054.45
  4. Step 4: Simplify right side
    666,001.31x = 455,049,268,214.01
  5. Step 5: Solve for x
    x = 455,049,268,214.01/666,001.31
  6. Step 6: Final answer
    x = 683,255.82

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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.