Home / 720,798,108.78-994,740,012.13-403,239,410.91

Finding the Fourth Proportional to 720,798,108.78, 994,740,012.13 and 403,239,410.91

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Solution

The fourth proportional to 720,798,108.78, 994,740,012.13 and 403,239,410.91 is: 556,491,993.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,798,108.78 : 994,740,012.13 = 403,239,410.91 : x
  2. Step 2: Convert to fraction form
    720,798,108.78/994,740,012.13 = 403,239,410.91/x
  3. Step 3: Cross multiply
    720,798,108.78x = 994,740,012.13 × 403,239,410.91
  4. Step 4: Simplify right side
    720,798,108.78x = 401,118,376,498,899,392
  5. Step 5: Solve for x
    x = 401,118,376,498,899,392/720,798,108.78
  6. Step 6: Final answer
    x = 556,491,993.55

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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.