Home / 809,859,758.94-1,216,727,619.21-519,296,161.50

Finding the Fourth Proportional to 809,859,758.94, 1,216,727,619.21 and 519,296,161.50

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Solution

The fourth proportional to 809,859,758.94, 1,216,727,619.21 and 519,296,161.50 is: 780,186,909.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,859,758.94 : 1,216,727,619.21 = 519,296,161.50 : x
  2. Step 2: Convert to fraction form
    809,859,758.94/1,216,727,619.21 = 519,296,161.50/x
  3. Step 3: Cross multiply
    809,859,758.94x = 1,216,727,619.21 × 519,296,161.50
  4. Step 4: Simplify right side
    809,859,758.94x = 631,841,982,246,786,688
  5. Step 5: Solve for x
    x = 631,841,982,246,786,688/809,859,758.94
  6. Step 6: Final answer
    x = 780,186,909.24

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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.