Home / 1,027,405.95-1,540,859.64-428,040.10

Finding the Fourth Proportional to 1,027,405.95, 1,540,859.64 and 428,040.10

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Solution

The fourth proportional to 1,027,405.95, 1,540,859.64 and 428,040.10 is: 641,956.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027,405.95 : 1,540,859.64 = 428,040.10 : x
  2. Step 2: Convert to fraction form
    1,027,405.95/1,540,859.64 = 428,040.10/x
  3. Step 3: Cross multiply
    1,027,405.95x = 1,540,859.64 × 428,040.10
  4. Step 4: Simplify right side
    1,027,405.95x = 659,549,714,391.56
  5. Step 5: Solve for x
    x = 659,549,714,391.56/1,027,405.95
  6. Step 6: Final answer
    x = 641,956.29

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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.