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Finding the Fourth Proportional to 492,437.34, 679,447.80 and 298,840.65

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Solution

The fourth proportional to 492,437.34, 679,447.80 and 298,840.65 is: 412,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,437.34 : 679,447.80 = 298,840.65 : x
  2. Step 2: Convert to fraction form
    492,437.34/679,447.80 = 298,840.65/x
  3. Step 3: Cross multiply
    492,437.34x = 679,447.80 × 298,840.65
  4. Step 4: Simplify right side
    492,437.34x = 203,046,622,193.07
  5. Step 5: Solve for x
    x = 203,046,622,193.07/492,437.34
  6. Step 6: Final answer
    x = 412,329.87

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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.