Home / 426,044,998.80-639,067,498.20-272,989,990.80

Finding the Fourth Proportional to 426,044,998.80, 639,067,498.20 and 272,989,990.80

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Solution

The fourth proportional to 426,044,998.80, 639,067,498.20 and 272,989,990.80 is: 409,484,986.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,044,998.80 : 639,067,498.20 = 272,989,990.80 : x
  2. Step 2: Convert to fraction form
    426,044,998.80/639,067,498.20 = 272,989,990.80/x
  3. Step 3: Cross multiply
    426,044,998.80x = 639,067,498.20 × 272,989,990.80
  4. Step 4: Simplify right side
    426,044,998.80x = 174,459,030,454,197,024
  5. Step 5: Solve for x
    x = 174,459,030,454,197,024/426,044,998.80
  6. Step 6: Final answer
    x = 409,484,986.20

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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.