Home / 642,052,419.81-886,086,982.85-363,643,470.69

Finding the Fourth Proportional to 642,052,419.81, 886,086,982.85 and 363,643,470.69

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Solution

The fourth proportional to 642,052,419.81, 886,086,982.85 and 363,643,470.69 is: 501,858,938.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,052,419.81 : 886,086,982.85 = 363,643,470.69 : x
  2. Step 2: Convert to fraction form
    642,052,419.81/886,086,982.85 = 363,643,470.69/x
  3. Step 3: Cross multiply
    642,052,419.81x = 886,086,982.85 × 363,643,470.69
  4. Step 4: Simplify right side
    642,052,419.81x = 322,219,745,774,986,304
  5. Step 5: Solve for x
    x = 322,219,745,774,986,304/642,052,419.81
  6. Step 6: Final answer
    x = 501,858,938.36

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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.