Home / 1,279,277.10-1,918,911.87-520,939.98

Finding the Fourth Proportional to 1,279,277.10, 1,918,911.87 and 520,939.98

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Solution

The fourth proportional to 1,279,277.10, 1,918,911.87 and 520,939.98 is: 781,408.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,277.10 : 1,918,911.87 = 520,939.98 : x
  2. Step 2: Convert to fraction form
    1,279,277.10/1,918,911.87 = 520,939.98/x
  3. Step 3: Cross multiply
    1,279,277.10x = 1,918,911.87 × 520,939.98
  4. Step 4: Simplify right side
    1,279,277.10x = 999,637,911,179.56
  5. Step 5: Solve for x
    x = 999,637,911,179.56/1,279,277.10
  6. Step 6: Final answer
    x = 781,408.43

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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.