Home / 478,420,648.48-660,220,939.83-258,404,074.48

Finding the Fourth Proportional to 478,420,648.48, 660,220,939.83 and 258,404,074.48

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Solution

The fourth proportional to 478,420,648.48, 660,220,939.83 and 258,404,074.48 is: 356,597,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,420,648.48 : 660,220,939.83 = 258,404,074.48 : x
  2. Step 2: Convert to fraction form
    478,420,648.48/660,220,939.83 = 258,404,074.48/x
  3. Step 3: Cross multiply
    478,420,648.48x = 660,220,939.83 × 258,404,074.48
  4. Step 4: Simplify right side
    478,420,648.48x = 170,603,780,910,890,400
  5. Step 5: Solve for x
    x = 170,603,780,910,890,400/478,420,648.48
  6. Step 6: Final answer
    x = 356,597,863.10

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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.