Home / 505,484,920.20-758,227,380.30-287,806,686.60

Finding the Fourth Proportional to 505,484,920.20, 758,227,380.30 and 287,806,686.60

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Solution

The fourth proportional to 505,484,920.20, 758,227,380.30 and 287,806,686.60 is: 431,710,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,484,920.20 : 758,227,380.30 = 287,806,686.60 : x
  2. Step 2: Convert to fraction form
    505,484,920.20/758,227,380.30 = 287,806,686.60/x
  3. Step 3: Cross multiply
    505,484,920.20x = 758,227,380.30 × 287,806,686.60
  4. Step 4: Simplify right side
    505,484,920.20x = 218,222,910,013,541,120
  5. Step 5: Solve for x
    x = 218,222,910,013,541,120/505,484,920.20
  6. Step 6: Final answer
    x = 431,710,029.90

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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.