Home / 641,712,997.65-962,634,750.09-221,479,677.30

Finding the Fourth Proportional to 641,712,997.65, 962,634,750.09 and 221,479,677.30

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Solution

The fourth proportional to 641,712,997.65, 962,634,750.09 and 221,479,677.30 is: 332,242,037.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,712,997.65 : 962,634,750.09 = 221,479,677.30 : x
  2. Step 2: Convert to fraction form
    641,712,997.65/962,634,750.09 = 221,479,677.30/x
  3. Step 3: Cross multiply
    641,712,997.65x = 962,634,750.09 × 221,479,677.30
  4. Step 4: Simplify right side
    641,712,997.65x = 213,204,033,807,699,360
  5. Step 5: Solve for x
    x = 213,204,033,807,699,360/641,712,997.65
  6. Step 6: Final answer
    x = 332,242,037.47

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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.