Home / 690,672.72-1,036,149.71-291,314.97

Finding the Fourth Proportional to 690,672.72, 1,036,149.71 and 291,314.97

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Solution

The fourth proportional to 690,672.72, 1,036,149.71 and 291,314.97 is: 437,031.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,672.72 : 1,036,149.71 = 291,314.97 : x
  2. Step 2: Convert to fraction form
    690,672.72/1,036,149.71 = 291,314.97/x
  3. Step 3: Cross multiply
    690,672.72x = 1,036,149.71 × 291,314.97
  4. Step 4: Simplify right side
    690,672.72x = 301,845,920,227.58
  5. Step 5: Solve for x
    x = 301,845,920,227.58/690,672.72
  6. Step 6: Final answer
    x = 437,031.77

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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.