Home / 389,923.88-584,885.81-140,605.88

Finding the Fourth Proportional to 389,923.88, 584,885.81 and 140,605.88

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Solution

The fourth proportional to 389,923.88, 584,885.81 and 140,605.88 is: 210,908.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,923.88 : 584,885.81 = 140,605.88 : x
  2. Step 2: Convert to fraction form
    389,923.88/584,885.81 = 140,605.88/x
  3. Step 3: Cross multiply
    389,923.88x = 584,885.81 × 140,605.88
  4. Step 4: Simplify right side
    389,923.88x = 82,238,381,441.65
  5. Step 5: Solve for x
    x = 82,238,381,441.65/389,923.88
  6. Step 6: Final answer
    x = 210,908.81

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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.