Home / 478,420,661.24-660,220,957.44-258,404,087.24

Finding the Fourth Proportional to 478,420,661.24, 660,220,957.44 and 258,404,087.24

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Solution

The fourth proportional to 478,420,661.24, 660,220,957.44 and 258,404,087.24 is: 356,597,880.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,420,661.24 : 660,220,957.44 = 258,404,087.24 : x
  2. Step 2: Convert to fraction form
    478,420,661.24/660,220,957.44 = 258,404,087.24/x
  3. Step 3: Cross multiply
    478,420,661.24x = 660,220,957.44 × 258,404,087.24
  4. Step 4: Simplify right side
    478,420,661.24x = 170,603,793,880,700,992
  5. Step 5: Solve for x
    x = 170,603,793,880,700,992/478,420,661.24
  6. Step 6: Final answer
    x = 356,597,880.70

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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.