Home / 919,380,711.49-1,268,772,299.45-501,719,917.39

Finding the Fourth Proportional to 919,380,711.49, 1,268,772,299.45 and 501,719,917.39

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Solution

The fourth proportional to 919,380,711.49, 1,268,772,299.45 and 501,719,917.39 is: 692,388,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,380,711.49 : 1,268,772,299.45 = 501,719,917.39 : x
  2. Step 2: Convert to fraction form
    919,380,711.49/1,268,772,299.45 = 501,719,917.39/x
  3. Step 3: Cross multiply
    919,380,711.49x = 1,268,772,299.45 × 501,719,917.39
  4. Step 4: Simplify right side
    919,380,711.49x = 636,568,333,263,000,320
  5. Step 5: Solve for x
    x = 636,568,333,263,000,320/919,380,711.49
  6. Step 6: Final answer
    x = 692,388,175.33

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1.5x scale

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.