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Finding the Fourth Proportional to 628,200,723.78, 866,889,034.62 and 360,084,343.14

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Solution

The fourth proportional to 628,200,723.78, 866,889,034.62 and 360,084,343.14 is: 496,900,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,200,723.78 : 866,889,034.62 = 360,084,343.14 : x
  2. Step 2: Convert to fraction form
    628,200,723.78/866,889,034.62 = 360,084,343.14/x
  3. Step 3: Cross multiply
    628,200,723.78x = 866,889,034.62 × 360,084,343.14
  4. Step 4: Simplify right side
    628,200,723.78x = 312,153,168,606,411,392
  5. Step 5: Solve for x
    x = 312,153,168,606,411,392/628,200,723.78
  6. Step 6: Final answer
    x = 496,900,364.47

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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.