Home / 778,523.94-1,074,394.90-491,939.46

Finding the Fourth Proportional to 778,523.94, 1,074,394.90 and 491,939.46

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Solution

The fourth proportional to 778,523.94, 1,074,394.90 and 491,939.46 is: 678,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,523.94 : 1,074,394.90 = 491,939.46 : x
  2. Step 2: Convert to fraction form
    778,523.94/1,074,394.90 = 491,939.46/x
  3. Step 3: Cross multiply
    778,523.94x = 1,074,394.90 × 491,939.46
  4. Step 4: Simplify right side
    778,523.94x = 528,537,246,932.75
  5. Step 5: Solve for x
    x = 528,537,246,932.75/778,523.94
  6. Step 6: Final answer
    x = 678,896.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.