Home / 1,279,379.12-1,918,957.26-521,300.48

Finding the Fourth Proportional to 1,279,379.12, 1,918,957.26 and 521,300.48

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Solution

The fourth proportional to 1,279,379.12, 1,918,957.26 and 521,300.48 is: 781,905.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,379.12 : 1,918,957.26 = 521,300.48 : x
  2. Step 2: Convert to fraction form
    1,279,379.12/1,918,957.26 = 521,300.48/x
  3. Step 3: Cross multiply
    1,279,379.12x = 1,918,957.26 × 521,300.48
  4. Step 4: Simplify right side
    1,279,379.12x = 1,000,353,340,737.48
  5. Step 5: Solve for x
    x = 1,000,353,340,737.48/1,279,379.12
  6. Step 6: Final answer
    x = 781,905.32

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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.