Home / 718,750,920.34-991,876,269-388,726,059.34

Finding the Fourth Proportional to 718,750,920.34, 991,876,269 and 388,726,059.34

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Solution

The fourth proportional to 718,750,920.34, 991,876,269 and 388,726,059.34 is: 536,441,961.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,750,920.34 : 991,876,269 = 388,726,059.34 : x
  2. Step 2: Convert to fraction form
    718,750,920.34/991,876,269 = 388,726,059.34/x
  3. Step 3: Cross multiply
    718,750,920.34x = 991,876,269 × 388,726,059.34
  4. Step 4: Simplify right side
    718,750,920.34x = 385,568,153,401,231,808
  5. Step 5: Solve for x
    x = 385,568,153,401,231,808/718,750,920.34
  6. Step 6: Final answer
    x = 536,441,961.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.