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Finding the Fourth Proportional to 496,599.53, 685,259.91 and 278,758.29

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Solution

The fourth proportional to 496,599.53, 685,259.91 and 278,758.29 is: 384,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,599.53 : 685,259.91 = 278,758.29 : x
  2. Step 2: Convert to fraction form
    496,599.53/685,259.91 = 278,758.29/x
  3. Step 3: Cross multiply
    496,599.53x = 685,259.91 × 278,758.29
  4. Step 4: Simplify right side
    496,599.53x = 191,021,880,717.15
  5. Step 5: Solve for x
    x = 191,021,880,717.15/496,599.53
  6. Step 6: Final answer
    x = 384,659.81

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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.