Home / 857,921.22-1,286,554.08-289,149.50

Finding the Fourth Proportional to 857,921.22, 1,286,554.08 and 289,149.50

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Solution

The fourth proportional to 857,921.22, 1,286,554.08 and 289,149.50 is: 433,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,921.22 : 1,286,554.08 = 289,149.50 : x
  2. Step 2: Convert to fraction form
    857,921.22/1,286,554.08 = 289,149.50/x
  3. Step 3: Cross multiply
    857,921.22x = 1,286,554.08 × 289,149.50
  4. Step 4: Simplify right side
    857,921.22x = 372,006,466,018.79
  5. Step 5: Solve for x
    x = 372,006,466,018.79/857,921.22
  6. Step 6: Final answer
    x = 433,613.78

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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.