Home / 472,395,919.80-708,593,879.70-213,619,582.20

Finding the Fourth Proportional to 472,395,919.80, 708,593,879.70 and 213,619,582.20

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Solution

The fourth proportional to 472,395,919.80, 708,593,879.70 and 213,619,582.20 is: 320,429,373.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,395,919.80 : 708,593,879.70 = 213,619,582.20 : x
  2. Step 2: Convert to fraction form
    472,395,919.80/708,593,879.70 = 213,619,582.20/x
  3. Step 3: Cross multiply
    472,395,919.80x = 708,593,879.70 × 213,619,582.20
  4. Step 4: Simplify right side
    472,395,919.80x = 151,369,528,530,991,072
  5. Step 5: Solve for x
    x = 151,369,528,530,991,072/472,395,919.80
  6. Step 6: Final answer
    x = 320,429,373.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.