Home / 813,164,073.62-1,219,775,018.78-260,394,676.28

Finding the Fourth Proportional to 813,164,073.62, 1,219,775,018.78 and 260,394,676.28

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Solution

The fourth proportional to 813,164,073.62, 1,219,775,018.78 and 260,394,676.28 is: 390,601,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,164,073.62 : 1,219,775,018.78 = 260,394,676.28 : x
  2. Step 2: Convert to fraction form
    813,164,073.62/1,219,775,018.78 = 260,394,676.28/x
  3. Step 3: Cross multiply
    813,164,073.62x = 1,219,775,018.78 × 260,394,676.28
  4. Step 4: Simplify right side
    813,164,073.62x = 317,622,921,142,248,192
  5. Step 5: Solve for x
    x = 317,622,921,142,248,192/813,164,073.62
  6. Step 6: Final answer
    x = 390,601,271.56

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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.