Home / 868,065,589.80-1,198,033,211.14-515,642,972.90

Finding the Fourth Proportional to 868,065,589.80, 1,198,033,211.14 and 515,642,972.90

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Solution

The fourth proportional to 868,065,589.80, 1,198,033,211.14 and 515,642,972.90 is: 711,648,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,065,589.80 : 1,198,033,211.14 = 515,642,972.90 : x
  2. Step 2: Convert to fraction form
    868,065,589.80/1,198,033,211.14 = 515,642,972.90/x
  3. Step 3: Cross multiply
    868,065,589.80x = 1,198,033,211.14 × 515,642,972.90
  4. Step 4: Simplify right side
    868,065,589.80x = 617,757,406,617,883,776
  5. Step 5: Solve for x
    x = 617,757,406,617,883,776/868,065,589.80
  6. Step 6: Final answer
    x = 711,648,306.16

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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.