Home / 660,077,218.60-990,115,827.90-199,955,600.80

Finding the Fourth Proportional to 660,077,218.60, 990,115,827.90 and 199,955,600.80

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Solution

The fourth proportional to 660,077,218.60, 990,115,827.90 and 199,955,600.80 is: 299,933,401.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,077,218.60 : 990,115,827.90 = 199,955,600.80 : x
  2. Step 2: Convert to fraction form
    660,077,218.60/990,115,827.90 = 199,955,600.80/x
  3. Step 3: Cross multiply
    660,077,218.60x = 990,115,827.90 × 199,955,600.80
  4. Step 4: Simplify right side
    660,077,218.60x = 197,979,205,229,333,920
  5. Step 5: Solve for x
    x = 197,979,205,229,333,920/660,077,218.60
  6. Step 6: Final answer
    x = 299,933,401.20

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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.