Home / 636,942,256.76-878,952,041.16-354,699,255.80

Finding the Fourth Proportional to 636,942,256.76, 878,952,041.16 and 354,699,255.80

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Solution

The fourth proportional to 636,942,256.76, 878,952,041.16 and 354,699,255.80 is: 489,469,228.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,942,256.76 : 878,952,041.16 = 354,699,255.80 : x
  2. Step 2: Convert to fraction form
    636,942,256.76/878,952,041.16 = 354,699,255.80/x
  3. Step 3: Cross multiply
    636,942,256.76x = 878,952,041.16 × 354,699,255.80
  4. Step 4: Simplify right side
    636,942,256.76x = 311,763,634,883,342,976
  5. Step 5: Solve for x
    x = 311,763,634,883,342,976/636,942,256.76
  6. Step 6: Final answer
    x = 489,469,228.29

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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.