Home / 857,146.18-1,285,899.09-324,655.42

Finding the Fourth Proportional to 857,146.18, 1,285,899.09 and 324,655.42

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Solution

The fourth proportional to 857,146.18, 1,285,899.09 and 324,655.42 is: 487,051.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,146.18 : 1,285,899.09 = 324,655.42 : x
  2. Step 2: Convert to fraction form
    857,146.18/1,285,899.09 = 324,655.42/x
  3. Step 3: Cross multiply
    857,146.18x = 1,285,899.09 × 324,655.42
  4. Step 4: Simplify right side
    857,146.18x = 417,474,109,141.57
  5. Step 5: Solve for x
    x = 417,474,109,141.57/857,146.18
  6. Step 6: Final answer
    x = 487,051.24

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1.5x scale

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.