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Finding the Fourth Proportional to 666,628,647.24, 920,266,534.71 and 443,980,849.80

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Solution

The fourth proportional to 666,628,647.24, 920,266,534.71 and 443,980,849.80 is: 612,906,030.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,628,647.24 : 920,266,534.71 = 443,980,849.80 : x
  2. Step 2: Convert to fraction form
    666,628,647.24/920,266,534.71 = 443,980,849.80/x
  3. Step 3: Cross multiply
    666,628,647.24x = 920,266,534.71 × 443,980,849.80
  4. Step 4: Simplify right side
    666,628,647.24x = 408,580,718,123,047,040
  5. Step 5: Solve for x
    x = 408,580,718,123,047,040/666,628,647.24
  6. Step 6: Final answer
    x = 612,906,030.69

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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.