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Finding the Fourth Proportional to 496,774, 685,548.20 and 270,421.20

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Solution

The fourth proportional to 496,774, 685,548.20 and 270,421.20 is: 373,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,774 : 685,548.20 = 270,421.20 : x
  2. Step 2: Convert to fraction form
    496,774/685,548.20 = 270,421.20/x
  3. Step 3: Cross multiply
    496,774x = 685,548.20 × 270,421.20
  4. Step 4: Simplify right side
    496,774x = 185,386,766,901.84
  5. Step 5: Solve for x
    x = 185,386,766,901.84/496,774
  6. Step 6: Final answer
    x = 373,181.30

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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.