Home / 711,315.27-981,601.34-389,024.37

Finding the Fourth Proportional to 711,315.27, 981,601.34 and 389,024.37

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Solution

The fourth proportional to 711,315.27, 981,601.34 and 389,024.37 is: 536,846.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,315.27 : 981,601.34 = 389,024.37 : x
  2. Step 2: Convert to fraction form
    711,315.27/981,601.34 = 389,024.37/x
  3. Step 3: Cross multiply
    711,315.27x = 981,601.34 × 389,024.37
  4. Step 4: Simplify right side
    711,315.27x = 381,866,840,939.53
  5. Step 5: Solve for x
    x = 381,866,840,939.53/711,315.27
  6. Step 6: Final answer
    x = 536,846.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.