Home / 711,304.39-981,616.88-405,409.24

Finding the Fourth Proportional to 711,304.39, 981,616.88 and 405,409.24

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Solution

The fourth proportional to 711,304.39, 981,616.88 and 405,409.24 is: 559,474.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,304.39 : 981,616.88 = 405,409.24 : x
  2. Step 2: Convert to fraction form
    711,304.39/981,616.88 = 405,409.24/x
  3. Step 3: Cross multiply
    711,304.39x = 981,616.88 × 405,409.24
  4. Step 4: Simplify right side
    711,304.39x = 397,956,546,356.84
  5. Step 5: Solve for x
    x = 397,956,546,356.84/711,304.39
  6. Step 6: Final answer
    x = 559,474.33

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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.