Home / 521,605,391.40-782,408,087.10-340,206,863.40

Finding the Fourth Proportional to 521,605,391.40, 782,408,087.10 and 340,206,863.40

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Solution

The fourth proportional to 521,605,391.40, 782,408,087.10 and 340,206,863.40 is: 510,310,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,605,391.40 : 782,408,087.10 = 340,206,863.40 : x
  2. Step 2: Convert to fraction form
    521,605,391.40/782,408,087.10 = 340,206,863.40/x
  3. Step 3: Cross multiply
    521,605,391.40x = 782,408,087.10 × 340,206,863.40
  4. Step 4: Simplify right side
    521,605,391.40x = 266,180,601,211,084,992
  5. Step 5: Solve for x
    x = 266,180,601,211,084,992/521,605,391.40
  6. Step 6: Final answer
    x = 510,310,295.10

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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.