Home / 1,074,505,872.30-1,612,156,939.65-428,737,065.90

Finding the Fourth Proportional to 1,074,505,872.30, 1,612,156,939.65 and 428,737,065.90

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Solution

The fourth proportional to 1,074,505,872.30, 1,612,156,939.65 and 428,737,065.90 is: 643,264,456.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074,505,872.30 : 1,612,156,939.65 = 428,737,065.90 : x
  2. Step 2: Convert to fraction form
    1,074,505,872.30/1,612,156,939.65 = 428,737,065.90/x
  3. Step 3: Cross multiply
    1,074,505,872.30x = 1,612,156,939.65 × 428,737,065.90
  4. Step 4: Simplify right side
    1,074,505,872.30x = 691,191,436,075,864,320
  5. Step 5: Solve for x
    x = 691,191,436,075,864,320/1,074,505,872.30
  6. Step 6: Final answer
    x = 643,264,456.62

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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.