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Finding the Fourth Proportional to 664,009,866.20, 996,014,799.30 and 203,947,297.40

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Solution

The fourth proportional to 664,009,866.20, 996,014,799.30 and 203,947,297.40 is: 305,920,946.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,009,866.20 : 996,014,799.30 = 203,947,297.40 : x
  2. Step 2: Convert to fraction form
    664,009,866.20/996,014,799.30 = 203,947,297.40/x
  3. Step 3: Cross multiply
    664,009,866.20x = 996,014,799.30 × 203,947,297.40
  4. Step 4: Simplify right side
    664,009,866.20x = 203,134,526,487,638,400
  5. Step 5: Solve for x
    x = 203,134,526,487,638,400/664,009,866.20
  6. Step 6: Final answer
    x = 305,920,946.10

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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.