Home / 1,215,261,728.70-1,822,942,359.45-353,618,720.70

Finding the Fourth Proportional to 1,215,261,728.70, 1,822,942,359.45 and 353,618,720.70

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Solution

The fourth proportional to 1,215,261,728.70, 1,822,942,359.45 and 353,618,720.70 is: 530,442,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,261,728.70 : 1,822,942,359.45 = 353,618,720.70 : x
  2. Step 2: Convert to fraction form
    1,215,261,728.70/1,822,942,359.45 = 353,618,720.70/x
  3. Step 3: Cross multiply
    1,215,261,728.70x = 1,822,942,359.45 × 353,618,720.70
  4. Step 4: Simplify right side
    1,215,261,728.70x = 644,626,545,058,548,608
  5. Step 5: Solve for x
    x = 644,626,545,058,548,608/1,215,261,728.70
  6. Step 6: Final answer
    x = 530,442,562.15

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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.