Home / 667,021.40-1,001,188.20-330,442.10

Finding the Fourth Proportional to 667,021.40, 1,001,188.20 and 330,442.10

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Solution

The fourth proportional to 667,021.40, 1,001,188.20 and 330,442.10 is: 495,988.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,021.40 : 1,001,188.20 = 330,442.10 : x
  2. Step 2: Convert to fraction form
    667,021.40/1,001,188.20 = 330,442.10/x
  3. Step 3: Cross multiply
    667,021.40x = 1,001,188.20 × 330,442.10
  4. Step 4: Simplify right side
    667,021.40x = 330,834,731,303.22
  5. Step 5: Solve for x
    x = 330,834,731,303.22/667,021.40
  6. Step 6: Final answer
    x = 495,988.18

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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.