Home / 711,454.37-981,786.15-389,157.53

Finding the Fourth Proportional to 711,454.37, 981,786.15 and 389,157.53

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Solution

The fourth proportional to 711,454.37, 981,786.15 and 389,157.53 is: 537,025.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,454.37 : 981,786.15 = 389,157.53 : x
  2. Step 2: Convert to fraction form
    711,454.37/981,786.15 = 389,157.53/x
  3. Step 3: Cross multiply
    711,454.37x = 981,786.15 × 389,157.53
  4. Step 4: Simplify right side
    711,454.37x = 382,069,468,213.28
  5. Step 5: Solve for x
    x = 382,069,468,213.28/711,454.37
  6. Step 6: Final answer
    x = 537,025.97

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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.