Home / 426,492,057.20-639,738,085.80-196,909,545.20

Finding the Fourth Proportional to 426,492,057.20, 639,738,085.80 and 196,909,545.20

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Solution

The fourth proportional to 426,492,057.20, 639,738,085.80 and 196,909,545.20 is: 295,364,317.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,492,057.20 : 639,738,085.80 = 196,909,545.20 : x
  2. Step 2: Convert to fraction form
    426,492,057.20/639,738,085.80 = 196,909,545.20/x
  3. Step 3: Cross multiply
    426,492,057.20x = 639,738,085.80 × 196,909,545.20
  4. Step 4: Simplify right side
    426,492,057.20x = 125,970,535,521,996,560
  5. Step 5: Solve for x
    x = 125,970,535,521,996,560/426,492,057.20
  6. Step 6: Final answer
    x = 295,364,317.80

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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.