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Finding the Fourth Proportional to 478,442.03, 659,958.03 and 284,719.79

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Solution

The fourth proportional to 478,442.03, 659,958.03 and 284,719.79 is: 392,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,442.03 : 659,958.03 = 284,719.79 : x
  2. Step 2: Convert to fraction form
    478,442.03/659,958.03 = 284,719.79/x
  3. Step 3: Cross multiply
    478,442.03x = 659,958.03 × 284,719.79
  4. Step 4: Simplify right side
    478,442.03x = 187,903,113,360.31
  5. Step 5: Solve for x
    x = 187,903,113,360.31/478,442.03
  6. Step 6: Final answer
    x = 392,739.57

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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.