Home / 987,378.30-1,479,876.75-454,168.26

Finding the Fourth Proportional to 987,378.30, 1,479,876.75 and 454,168.26

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Solution

The fourth proportional to 987,378.30, 1,479,876.75 and 454,168.26 is: 680,704.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,378.30 : 1,479,876.75 = 454,168.26 : x
  2. Step 2: Convert to fraction form
    987,378.30/1,479,876.75 = 454,168.26/x
  3. Step 3: Cross multiply
    987,378.30x = 1,479,876.75 × 454,168.26
  4. Step 4: Simplify right side
    987,378.30x = 672,113,048,561.96
  5. Step 5: Solve for x
    x = 672,113,048,561.96/987,378.30
  6. Step 6: Final answer
    x = 680,704.70

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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.