Home / 868,065,590.30-1,198,033,211.83-515,642,973.40

Finding the Fourth Proportional to 868,065,590.30, 1,198,033,211.83 and 515,642,973.40

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Solution

The fourth proportional to 868,065,590.30, 1,198,033,211.83 and 515,642,973.40 is: 711,648,306.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,065,590.30 : 1,198,033,211.83 = 515,642,973.40 : x
  2. Step 2: Convert to fraction form
    868,065,590.30/1,198,033,211.83 = 515,642,973.40/x
  3. Step 3: Cross multiply
    868,065,590.30x = 1,198,033,211.83 × 515,642,973.40
  4. Step 4: Simplify right side
    868,065,590.30x = 617,757,407,573,982,976
  5. Step 5: Solve for x
    x = 617,757,407,573,982,976/868,065,590.30
  6. Step 6: Final answer
    x = 711,648,306.85

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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.