Home / 813,816,039.47-1,220,782,894.41-340,639,194.53

Finding the Fourth Proportional to 813,816,039.47, 1,220,782,894.41 and 340,639,194.53

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Solution

The fourth proportional to 813,816,039.47, 1,220,782,894.41 and 340,639,194.53 is: 510,983,418.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,816,039.47 : 1,220,782,894.41 = 340,639,194.53 : x
  2. Step 2: Convert to fraction form
    813,816,039.47/1,220,782,894.41 = 340,639,194.53/x
  3. Step 3: Cross multiply
    813,816,039.47x = 1,220,782,894.41 × 340,639,194.53
  4. Step 4: Simplify right side
    813,816,039.47x = 415,846,501,841,720,512
  5. Step 5: Solve for x
    x = 415,846,501,841,720,512/813,816,039.47
  6. Step 6: Final answer
    x = 510,983,418.46

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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.