Home / 1,432,517.21-2,148,542.23-421,402.65

Finding the Fourth Proportional to 1,432,517.21, 2,148,542.23 and 421,402.65

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Solution

The fourth proportional to 1,432,517.21, 2,148,542.23 and 421,402.65 is: 632,035.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432,517.21 : 2,148,542.23 = 421,402.65 : x
  2. Step 2: Convert to fraction form
    1,432,517.21/2,148,542.23 = 421,402.65/x
  3. Step 3: Cross multiply
    1,432,517.21x = 2,148,542.23 × 421,402.65
  4. Step 4: Simplify right side
    1,432,517.21x = 905,401,389,358.91
  5. Step 5: Solve for x
    x = 905,401,389,358.91/1,432,517.21
  6. Step 6: Final answer
    x = 632,035.26

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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.