Home / 1,074,505,872.80-1,612,156,940.40-428,737,066.40

Finding the Fourth Proportional to 1,074,505,872.80, 1,612,156,940.40 and 428,737,066.40

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Solution

The fourth proportional to 1,074,505,872.80, 1,612,156,940.40 and 428,737,066.40 is: 643,264,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,074,505,872.80 : 1,612,156,940.40 = 428,737,066.40 : x
  2. Step 2: Convert to fraction form
    1,074,505,872.80/1,612,156,940.40 = 428,737,066.40/x
  3. Step 3: Cross multiply
    1,074,505,872.80x = 1,612,156,940.40 × 428,737,066.40
  4. Step 4: Simplify right side
    1,074,505,872.80x = 691,191,437,203,495,680
  5. Step 5: Solve for x
    x = 691,191,437,203,495,680/1,074,505,872.80
  6. Step 6: Final answer
    x = 643,264,457.37

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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.