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Finding the Fourth Proportional to 442,019.00, 663,492.31 and 391,739.70

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Solution

The fourth proportional to 442,019.00, 663,492.31 and 391,739.70 is: 588,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,019.00 : 663,492.31 = 391,739.70 : x
  2. Step 2: Convert to fraction form
    442,019.00/663,492.31 = 391,739.70/x
  3. Step 3: Cross multiply
    442,019.00x = 663,492.31 × 391,739.70
  4. Step 4: Simplify right side
    442,019.00x = 259,916,277,492.36
  5. Step 5: Solve for x
    x = 259,916,277,492.36/442,019.00
  6. Step 6: Final answer
    x = 588,020.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.