Home / 472,395,911.80-708,593,867.70-213,619,574.20

Finding the Fourth Proportional to 472,395,911.80, 708,593,867.70 and 213,619,574.20

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Solution

The fourth proportional to 472,395,911.80, 708,593,867.70 and 213,619,574.20 is: 320,429,361.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,395,911.80 : 708,593,867.70 = 213,619,574.20 : x
  2. Step 2: Convert to fraction form
    472,395,911.80/708,593,867.70 = 213,619,574.20/x
  3. Step 3: Cross multiply
    472,395,911.80x = 708,593,867.70 × 213,619,574.20
  4. Step 4: Simplify right side
    472,395,911.80x = 151,369,520,298,805,120
  5. Step 5: Solve for x
    x = 151,369,520,298,805,120/472,395,911.80
  6. Step 6: Final answer
    x = 320,429,361.30

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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.