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Finding the Fourth Proportional to 666,495.46, 919,759.86 and 360,571

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Solution

The fourth proportional to 666,495.46, 919,759.86 and 360,571 is: 497,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,495.46 : 919,759.86 = 360,571 : x
  2. Step 2: Convert to fraction form
    666,495.46/919,759.86 = 360,571/x
  3. Step 3: Cross multiply
    666,495.46x = 919,759.86 × 360,571
  4. Step 4: Simplify right side
    666,495.46x = 331,638,732,480.06
  5. Step 5: Solve for x
    x = 331,638,732,480.06/666,495.46
  6. Step 6: Final answer
    x = 497,585.88

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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.