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Finding the Fourth Proportional to 492,515.65, 679,642.32 and 285,768.06

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Solution

The fourth proportional to 492,515.65, 679,642.32 and 285,768.06 is: 394,342.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,515.65 : 679,642.32 = 285,768.06 : x
  2. Step 2: Convert to fraction form
    492,515.65/679,642.32 = 285,768.06/x
  3. Step 3: Cross multiply
    492,515.65x = 679,642.32 × 285,768.06
  4. Step 4: Simplify right side
    492,515.65x = 194,220,067,280.30
  5. Step 5: Solve for x
    x = 194,220,067,280.30/492,515.65
  6. Step 6: Final answer
    x = 394,342.94

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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.