Home / 500,023,571.94-689,967,091.98-288,338,221.08

Finding the Fourth Proportional to 500,023,571.94, 689,967,091.98 and 288,338,221.08

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Solution

The fourth proportional to 500,023,571.94, 689,967,091.98 and 288,338,221.08 is: 397,869,010.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,023,571.94 : 689,967,091.98 = 288,338,221.08 : x
  2. Step 2: Convert to fraction form
    500,023,571.94/689,967,091.98 = 288,338,221.08/x
  3. Step 3: Cross multiply
    500,023,571.94x = 689,967,091.98 × 288,338,221.08
  4. Step 4: Simplify right side
    500,023,571.94x = 198,943,883,905,253,920
  5. Step 5: Solve for x
    x = 198,943,883,905,253,920/500,023,571.94
  6. Step 6: Final answer
    x = 397,869,010.72

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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.