Home / 664,139,999.20-996,209,998.80-626,516,600.80

Finding the Fourth Proportional to 664,139,999.20, 996,209,998.80 and 626,516,600.80

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Solution

The fourth proportional to 664,139,999.20, 996,209,998.80 and 626,516,600.80 is: 939,774,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,139,999.20 : 996,209,998.80 = 626,516,600.80 : x
  2. Step 2: Convert to fraction form
    664,139,999.20/996,209,998.80 = 626,516,600.80/x
  3. Step 3: Cross multiply
    664,139,999.20x = 996,209,998.80 × 626,516,600.80
  4. Step 4: Simplify right side
    664,139,999.20x = 624,142,102,131,148,032
  5. Step 5: Solve for x
    x = 624,142,102,131,148,032/664,139,999.20
  6. Step 6: Final answer
    x = 939,774,901.20

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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.