Home / 720,321,524.49-994,054,989.11-422,970,341.43

Finding the Fourth Proportional to 720,321,524.49, 994,054,989.11 and 422,970,341.43

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Solution

The fourth proportional to 720,321,524.49, 994,054,989.11 and 422,970,341.43 is: 583,705,697.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,321,524.49 : 994,054,989.11 = 422,970,341.43 : x
  2. Step 2: Convert to fraction form
    720,321,524.49/994,054,989.11 = 422,970,341.43/x
  3. Step 3: Cross multiply
    720,321,524.49x = 994,054,989.11 × 422,970,341.43
  4. Step 4: Simplify right side
    720,321,524.49x = 420,455,778,141,936,768
  5. Step 5: Solve for x
    x = 420,455,778,141,936,768/720,321,524.49
  6. Step 6: Final answer
    x = 583,705,697.87

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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.