Home / 919,378,795.20-1,379,740,039.20-647,281,003.20

Finding the Fourth Proportional to 919,378,795.20, 1,379,740,039.20 and 647,281,003.20

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Solution

The fourth proportional to 919,378,795.20, 1,379,740,039.20 and 647,281,003.20 is: 971,394,512.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,378,795.20 : 1,379,740,039.20 = 647,281,003.20 : x
  2. Step 2: Convert to fraction form
    919,378,795.20/1,379,740,039.20 = 647,281,003.20/x
  3. Step 3: Cross multiply
    919,378,795.20x = 1,379,740,039.20 × 647,281,003.20
  4. Step 4: Simplify right side
    919,378,795.20x = 893,079,516,728,583,424
  5. Step 5: Solve for x
    x = 893,079,516,728,583,424/919,378,795.20
  6. Step 6: Final answer
    x = 971,394,512.68

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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.