Home / 788,045,009.80-1,181,960,205.90-205,824,785.80

Finding the Fourth Proportional to 788,045,009.80, 1,181,960,205.90 and 205,824,785.80

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Solution

The fourth proportional to 788,045,009.80, 1,181,960,205.90 and 205,824,785.80 is: 308,709,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,045,009.80 : 1,181,960,205.90 = 205,824,785.80 : x
  2. Step 2: Convert to fraction form
    788,045,009.80/1,181,960,205.90 = 205,824,785.80/x
  3. Step 3: Cross multiply
    788,045,009.80x = 1,181,960,205.90 × 205,824,785.80
  4. Step 4: Simplify right side
    788,045,009.80x = 243,276,706,203,491,424
  5. Step 5: Solve for x
    x = 243,276,706,203,491,424/788,045,009.80
  6. Step 6: Final answer
    x = 308,709,151.35

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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.