Home / 718,983,154.78-992,187,090.20-401,448,338.26

Finding the Fourth Proportional to 718,983,154.78, 992,187,090.20 and 401,448,338.26

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Solution

The fourth proportional to 718,983,154.78, 992,187,090.20 and 401,448,338.26 is: 553,993,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,983,154.78 : 992,187,090.20 = 401,448,338.26 : x
  2. Step 2: Convert to fraction form
    718,983,154.78/992,187,090.20 = 401,448,338.26/x
  3. Step 3: Cross multiply
    718,983,154.78x = 992,187,090.20 × 401,448,338.26
  4. Step 4: Simplify right side
    718,983,154.78x = 398,311,858,603,814,720
  5. Step 5: Solve for x
    x = 398,311,858,603,814,720/718,983,154.78
  6. Step 6: Final answer
    x = 553,993,311.19

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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.