Home / 857,311.55-1,285,162.72-288,294.79

Finding the Fourth Proportional to 857,311.55, 1,285,162.72 and 288,294.79

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Solution

The fourth proportional to 857,311.55, 1,285,162.72 and 288,294.79 is: 432,171.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,311.55 : 1,285,162.72 = 288,294.79 : x
  2. Step 2: Convert to fraction form
    857,311.55/1,285,162.72 = 288,294.79/x
  3. Step 3: Cross multiply
    857,311.55x = 1,285,162.72 × 288,294.79
  4. Step 4: Simplify right side
    857,311.55x = 370,505,716,478.23
  5. Step 5: Solve for x
    x = 370,505,716,478.23/857,311.55
  6. Step 6: Final answer
    x = 432,171.61

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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.