Home / 711,445.91-1,067,170.68-290,721.78

Finding the Fourth Proportional to 711,445.91, 1,067,170.68 and 290,721.78

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Solution

The fourth proportional to 711,445.91, 1,067,170.68 and 290,721.78 is: 436,083.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,445.91 : 1,067,170.68 = 290,721.78 : x
  2. Step 2: Convert to fraction form
    711,445.91/1,067,170.68 = 290,721.78/x
  3. Step 3: Cross multiply
    711,445.91x = 1,067,170.68 × 290,721.78
  4. Step 4: Simplify right side
    711,445.91x = 310,249,759,653.41
  5. Step 5: Solve for x
    x = 310,249,759,653.41/711,445.91
  6. Step 6: Final answer
    x = 436,083.41

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Double scale
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Similar ratio
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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.