Home / 1,292,780,500.80-1,939,443,429.60-419,314,032.96

Finding the Fourth Proportional to 1,292,780,500.80, 1,939,443,429.60 and 419,314,032.96

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Solution

The fourth proportional to 1,292,780,500.80, 1,939,443,429.60 and 419,314,032.96 is: 629,059,492.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,780,500.80 : 1,939,443,429.60 = 419,314,032.96 : x
  2. Step 2: Convert to fraction form
    1,292,780,500.80/1,939,443,429.60 = 419,314,032.96/x
  3. Step 3: Cross multiply
    1,292,780,500.80x = 1,939,443,429.60 × 419,314,032.96
  4. Step 4: Simplify right side
    1,292,780,500.80x = 813,235,846,163,349,760
  5. Step 5: Solve for x
    x = 813,235,846,163,349,760/1,292,780,500.80
  6. Step 6: Final answer
    x = 629,059,492.82

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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.