Home / 521,457,568.20-782,280,830.70-262,019,881.80

Finding the Fourth Proportional to 521,457,568.20, 782,280,830.70 and 262,019,881.80

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Solution

The fourth proportional to 521,457,568.20, 782,280,830.70 and 262,019,881.80 is: 393,077,295.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,457,568.20 : 782,280,830.70 = 262,019,881.80 : x
  2. Step 2: Convert to fraction form
    521,457,568.20/782,280,830.70 = 262,019,881.80/x
  3. Step 3: Cross multiply
    521,457,568.20x = 782,280,830.70 × 262,019,881.80
  4. Step 4: Simplify right side
    521,457,568.20x = 204,973,130,794,419,840
  5. Step 5: Solve for x
    x = 204,973,130,794,419,840/521,457,568.20
  6. Step 6: Final answer
    x = 393,077,295.82

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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.