Home / 1,420,711.13-2,129,738.10-521,911.55

Finding the Fourth Proportional to 1,420,711.13, 2,129,738.10 and 521,911.55

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Solution

The fourth proportional to 1,420,711.13, 2,129,738.10 and 521,911.55 is: 782,379.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,711.13 : 2,129,738.10 = 521,911.55 : x
  2. Step 2: Convert to fraction form
    1,420,711.13/2,129,738.10 = 521,911.55/x
  3. Step 3: Cross multiply
    1,420,711.13x = 2,129,738.10 × 521,911.55
  4. Step 4: Simplify right side
    1,420,711.13x = 1,111,534,912,865.06
  5. Step 5: Solve for x
    x = 1,111,534,912,865.06/1,420,711.13
  6. Step 6: Final answer
    x = 782,379.25

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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.