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Finding the Fourth Proportional to 492,441.01, 679,884.87 and 308,931.18

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Solution

The fourth proportional to 492,441.01, 679,884.87 and 308,931.18 is: 426,523.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,441.01 : 679,884.87 = 308,931.18 : x
  2. Step 2: Convert to fraction form
    492,441.01/679,884.87 = 308,931.18/x
  3. Step 3: Cross multiply
    492,441.01x = 679,884.87 × 308,931.18
  4. Step 4: Simplify right side
    492,441.01x = 210,037,635,153.25
  5. Step 5: Solve for x
    x = 210,037,635,153.25/492,441.01
  6. Step 6: Final answer
    x = 426,523.44

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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.