Home / 919,376,468.20-1,379,736,548.70-647,278,676.20

Finding the Fourth Proportional to 919,376,468.20, 1,379,736,548.70 and 647,278,676.20

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Solution

The fourth proportional to 919,376,468.20, 1,379,736,548.70 and 647,278,676.20 is: 971,391,021.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,376,468.20 : 1,379,736,548.70 = 647,278,676.20 : x
  2. Step 2: Convert to fraction form
    919,376,468.20/1,379,736,548.70 = 647,278,676.20/x
  3. Step 3: Cross multiply
    919,376,468.20x = 1,379,736,548.70 × 647,278,676.20
  4. Step 4: Simplify right side
    919,376,468.20x = 893,074,046,747,292,928
  5. Step 5: Solve for x
    x = 893,074,046,747,292,928/919,376,468.20
  6. Step 6: Final answer
    x = 971,391,021.67

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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.