Home / 426,964,479.18-640,321,080.48-193,660,218.06

Finding the Fourth Proportional to 426,964,479.18, 640,321,080.48 and 193,660,218.06

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Solution

The fourth proportional to 426,964,479.18, 640,321,080.48 and 193,660,218.06 is: 290,433,340.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,964,479.18 : 640,321,080.48 = 193,660,218.06 : x
  2. Step 2: Convert to fraction form
    426,964,479.18/640,321,080.48 = 193,660,218.06/x
  3. Step 3: Cross multiply
    426,964,479.18x = 640,321,080.48 × 193,660,218.06
  4. Step 4: Simplify right side
    426,964,479.18x = 124,004,720,074,171,616
  5. Step 5: Solve for x
    x = 124,004,720,074,171,616/426,964,479.18
  6. Step 6: Final answer
    x = 290,433,340.76

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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.