Home / 518,637,325.21-715,721,650.39-280,482,504.48

Finding the Fourth Proportional to 518,637,325.21, 715,721,650.39 and 280,482,504.48

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Solution

The fourth proportional to 518,637,325.21, 715,721,650.39 and 280,482,504.48 is: 387,067,014.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,637,325.21 : 715,721,650.39 = 280,482,504.48 : x
  2. Step 2: Convert to fraction form
    518,637,325.21/715,721,650.39 = 280,482,504.48/x
  3. Step 3: Cross multiply
    518,637,325.21x = 715,721,650.39 × 280,482,504.48
  4. Step 4: Simplify right side
    518,637,325.21x = 200,747,401,008,719,328
  5. Step 5: Solve for x
    x = 200,747,401,008,719,328/518,637,325.21
  6. Step 6: Final answer
    x = 387,067,014.37

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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.