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Finding the Fourth Proportional to 631,168.60, 870,186.18 and 467,307.64

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Solution

The fourth proportional to 631,168.60, 870,186.18 and 467,307.64 is: 644,272.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,168.60 : 870,186.18 = 467,307.64 : x
  2. Step 2: Convert to fraction form
    631,168.60/870,186.18 = 467,307.64/x
  3. Step 3: Cross multiply
    631,168.60x = 870,186.18 × 467,307.64
  4. Step 4: Simplify right side
    631,168.60x = 406,644,650,136.42
  5. Step 5: Solve for x
    x = 406,644,650,136.42/631,168.60
  6. Step 6: Final answer
    x = 644,272.62

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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.