Home / 919,397,408.20-1,379,767,958.70-647,299,616.20

Finding the Fourth Proportional to 919,397,408.20, 1,379,767,958.70 and 647,299,616.20

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Solution

The fourth proportional to 919,397,408.20, 1,379,767,958.70 and 647,299,616.20 is: 971,422,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,397,408.20 : 1,379,767,958.70 = 647,299,616.20 : x
  2. Step 2: Convert to fraction form
    919,397,408.20/1,379,767,958.70 = 647,299,616.20/x
  3. Step 3: Cross multiply
    919,397,408.20x = 1,379,767,958.70 × 647,299,616.20
  4. Step 4: Simplify right side
    919,397,408.20x = 893,123,270,111,567,488
  5. Step 5: Solve for x
    x = 893,123,270,111,567,488/919,397,408.20
  6. Step 6: Final answer
    x = 971,422,436.20

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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.