Home / 1,279,403.22-1,918,574.31-520,729.77

Finding the Fourth Proportional to 1,279,403.22, 1,918,574.31 and 520,729.77

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Solution

The fourth proportional to 1,279,403.22, 1,918,574.31 and 520,729.77 is: 780,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,403.22 : 1,918,574.31 = 520,729.77 : x
  2. Step 2: Convert to fraction form
    1,279,403.22/1,918,574.31 = 520,729.77/x
  3. Step 3: Cross multiply
    1,279,403.22x = 1,918,574.31 × 520,729.77
  4. Step 4: Simplify right side
    1,279,403.22x = 999,058,759,174.21
  5. Step 5: Solve for x
    x = 999,058,759,174.21/1,279,403.22
  6. Step 6: Final answer
    x = 780,878.73

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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.