Home / 1,643,815,712.78-2,465,474,434.20-447,384,649.12

Finding the Fourth Proportional to 1,643,815,712.78, 2,465,474,434.20 and 447,384,649.12

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Solution

The fourth proportional to 1,643,815,712.78, 2,465,474,434.20 and 447,384,649.12 is: 671,009,168.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,643,815,712.78 : 2,465,474,434.20 = 447,384,649.12 : x
  2. Step 2: Convert to fraction form
    1,643,815,712.78/2,465,474,434.20 = 447,384,649.12/x
  3. Step 3: Cross multiply
    1,643,815,712.78x = 2,465,474,434.20 × 447,384,649.12
  4. Step 4: Simplify right side
    1,643,815,712.78x = 1,103,015,414,658,897,408
  5. Step 5: Solve for x
    x = 1,103,015,414,658,897,408/1,643,815,712.78
  6. Step 6: Final answer
    x = 671,009,168.54

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.