Home / 711,216.60-981,495.98-405,286.44

Finding the Fourth Proportional to 711,216.60, 981,495.98 and 405,286.44

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Solution

The fourth proportional to 711,216.60, 981,495.98 and 405,286.44 is: 559,305.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,216.60 : 981,495.98 = 405,286.44 : x
  2. Step 2: Convert to fraction form
    711,216.60/981,495.98 = 405,286.44/x
  3. Step 3: Cross multiply
    711,216.60x = 981,495.98 × 405,286.44
  4. Step 4: Simplify right side
    711,216.60x = 397,787,009,701.03
  5. Step 5: Solve for x
    x = 397,787,009,701.03/711,216.60
  6. Step 6: Final answer
    x = 559,305.01

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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.