Home / 661,685.45-992,434.25-212,348.07

Finding the Fourth Proportional to 661,685.45, 992,434.25 and 212,348.07

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Solution

The fourth proportional to 661,685.45, 992,434.25 and 212,348.07 is: 318,491.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,685.45 : 992,434.25 = 212,348.07 : x
  2. Step 2: Convert to fraction form
    661,685.45/992,434.25 = 212,348.07/x
  3. Step 3: Cross multiply
    661,685.45x = 992,434.25 × 212,348.07
  4. Step 4: Simplify right side
    661,685.45x = 210,741,496,527.66
  5. Step 5: Solve for x
    x = 210,741,496,527.66/661,685.45
  6. Step 6: Final answer
    x = 318,491.96

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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.