Home / 472,395,979.80-708,593,969.70-407,772,754.20

Finding the Fourth Proportional to 472,395,979.80, 708,593,969.70 and 407,772,754.20

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Solution

The fourth proportional to 472,395,979.80, 708,593,969.70 and 407,772,754.20 is: 611,659,131.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,395,979.80 : 708,593,969.70 = 407,772,754.20 : x
  2. Step 2: Convert to fraction form
    472,395,979.80/708,593,969.70 = 407,772,754.20/x
  3. Step 3: Cross multiply
    472,395,979.80x = 708,593,969.70 × 407,772,754.20
  4. Step 4: Simplify right side
    472,395,979.80x = 288,945,314,634,080,384
  5. Step 5: Solve for x
    x = 288,945,314,634,080,384/472,395,979.80
  6. Step 6: Final answer
    x = 611,659,131.30

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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.