Home / 919,407,809.20-1,379,783,560.20-647,310,017.20

Finding the Fourth Proportional to 919,407,809.20, 1,379,783,560.20 and 647,310,017.20

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Solution

The fourth proportional to 919,407,809.20, 1,379,783,560.20 and 647,310,017.20 is: 971,438,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,407,809.20 : 1,379,783,560.20 = 647,310,017.20 : x
  2. Step 2: Convert to fraction form
    919,407,809.20/1,379,783,560.20 = 647,310,017.20/x
  3. Step 3: Cross multiply
    919,407,809.20x = 1,379,783,560.20 × 647,310,017.20
  4. Step 4: Simplify right side
    919,407,809.20x = 893,147,720,085,339,392
  5. Step 5: Solve for x
    x = 893,147,720,085,339,392/919,407,809.20
  6. Step 6: Final answer
    x = 971,438,039.95

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1.5x scale

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.