Home / 921,759.72-1,382,881.50-290,694.12

Finding the Fourth Proportional to 921,759.72, 1,382,881.50 and 290,694.12

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Solution

The fourth proportional to 921,759.72, 1,382,881.50 and 290,694.12 is: 436,117.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,759.72 : 1,382,881.50 = 290,694.12 : x
  2. Step 2: Convert to fraction form
    921,759.72/1,382,881.50 = 290,694.12/x
  3. Step 3: Cross multiply
    921,759.72x = 1,382,881.50 × 290,694.12
  4. Step 4: Simplify right side
    921,759.72x = 401,995,520,706.78
  5. Step 5: Solve for x
    x = 401,995,520,706.78/921,759.72
  6. Step 6: Final answer
    x = 436,117.47

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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.