Home / 868,065,590.80-1,198,033,212.52-515,642,973.90

Finding the Fourth Proportional to 868,065,590.80, 1,198,033,212.52 and 515,642,973.90

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Solution

The fourth proportional to 868,065,590.80, 1,198,033,212.52 and 515,642,973.90 is: 711,648,307.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,065,590.80 : 1,198,033,212.52 = 515,642,973.90 : x
  2. Step 2: Convert to fraction form
    868,065,590.80/1,198,033,212.52 = 515,642,973.90/x
  3. Step 3: Cross multiply
    868,065,590.80x = 1,198,033,212.52 × 515,642,973.90
  4. Step 4: Simplify right side
    868,065,590.80x = 617,757,408,534,783,488
  5. Step 5: Solve for x
    x = 617,757,408,534,783,488/868,065,590.80
  6. Step 6: Final answer
    x = 711,648,307.55

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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.