Home / 521,605,497.60-782,408,246.40-279,740,793.60

Finding the Fourth Proportional to 521,605,497.60, 782,408,246.40 and 279,740,793.60

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Solution

The fourth proportional to 521,605,497.60, 782,408,246.40 and 279,740,793.60 is: 419,611,190.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,605,497.60 : 782,408,246.40 = 279,740,793.60 : x
  2. Step 2: Convert to fraction form
    521,605,497.60/782,408,246.40 = 279,740,793.60/x
  3. Step 3: Cross multiply
    521,605,497.60x = 782,408,246.40 × 279,740,793.60
  4. Step 4: Simplify right side
    521,605,497.60x = 218,871,503,767,120,352
  5. Step 5: Solve for x
    x = 218,871,503,767,120,352/521,605,497.60
  6. Step 6: Final answer
    x = 419,611,190.40

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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.