Home / 727,291,221.70-1,090,936,832.55-509,187,835.30

Finding the Fourth Proportional to 727,291,221.70, 1,090,936,832.55 and 509,187,835.30

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Solution

The fourth proportional to 727,291,221.70, 1,090,936,832.55 and 509,187,835.30 is: 763,781,752.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,291,221.70 : 1,090,936,832.55 = 509,187,835.30 : x
  2. Step 2: Convert to fraction form
    727,291,221.70/1,090,936,832.55 = 509,187,835.30/x
  3. Step 3: Cross multiply
    727,291,221.70x = 1,090,936,832.55 × 509,187,835.30
  4. Step 4: Simplify right side
    727,291,221.70x = 555,491,764,215,173,056
  5. Step 5: Solve for x
    x = 555,491,764,215,173,056/727,291,221.70
  6. Step 6: Final answer
    x = 763,781,752.95

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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.