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Finding the Fourth Proportional to 666,627.21, 919,943 and 360,704.18

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Solution

The fourth proportional to 666,627.21, 919,943 and 360,704.18 is: 497,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,627.21 : 919,943 = 360,704.18 : x
  2. Step 2: Convert to fraction form
    666,627.21/919,943 = 360,704.18/x
  3. Step 3: Cross multiply
    666,627.21x = 919,943 × 360,704.18
  4. Step 4: Simplify right side
    666,627.21x = 331,827,283,161.88
  5. Step 5: Solve for x
    x = 331,827,283,161.88/666,627.21
  6. Step 6: Final answer
    x = 497,770.39

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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.