Home / 711,219.04-981,499.32-405,288.84

Finding the Fourth Proportional to 711,219.04, 981,499.32 and 405,288.84

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Solution

The fourth proportional to 711,219.04, 981,499.32 and 405,288.84 is: 559,308.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,219.04 : 981,499.32 = 405,288.84 : x
  2. Step 2: Convert to fraction form
    711,219.04/981,499.32 = 405,288.84/x
  3. Step 3: Cross multiply
    711,219.04x = 981,499.32 × 405,288.84
  4. Step 4: Simplify right side
    711,219.04x = 397,790,720,863.59
  5. Step 5: Solve for x
    x = 397,790,720,863.59/711,219.04
  6. Step 6: Final answer
    x = 559,308.31

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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.