Home / 521,785,688.60-782,678,532.90-214,919,845.40

Finding the Fourth Proportional to 521,785,688.60, 782,678,532.90 and 214,919,845.40

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Solution

The fourth proportional to 521,785,688.60, 782,678,532.90 and 214,919,845.40 is: 322,379,768.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,785,688.60 : 782,678,532.90 = 214,919,845.40 : x
  2. Step 2: Convert to fraction form
    521,785,688.60/782,678,532.90 = 214,919,845.40/x
  3. Step 3: Cross multiply
    521,785,688.60x = 782,678,532.90 × 214,919,845.40
  4. Step 4: Simplify right side
    521,785,688.60x = 168,213,149,288,766,816
  5. Step 5: Solve for x
    x = 168,213,149,288,766,816/521,785,688.60
  6. Step 6: Final answer
    x = 322,379,768.10

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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.