Home / 3,858,787,520-5,325,129,402.72-2,165,008,345.28

Finding the Fourth Proportional to 3,858,787,520, 5,325,129,402.72 and 2,165,008,345.28

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Solution

The fourth proportional to 3,858,787,520, 5,325,129,402.72 and 2,165,008,345.28 is: 2,987,712,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858,787,520 : 5,325,129,402.72 = 2,165,008,345.28 : x
  2. Step 2: Convert to fraction form
    3,858,787,520/5,325,129,402.72 = 2,165,008,345.28/x
  3. Step 3: Cross multiply
    3,858,787,520x = 5,325,129,402.72 × 2,165,008,345.28
  4. Step 4: Simplify right side
    3,858,787,520x = 11,528,949,596,584,704,000
  5. Step 5: Solve for x
    x = 11,528,949,596,584,704,000/3,858,787,520
  6. Step 6: Final answer
    x = 2,987,712,989.33

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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.