Home / 711,220.30-981,474.57-405,314.89

Finding the Fourth Proportional to 711,220.30, 981,474.57 and 405,314.89

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Solution

The fourth proportional to 711,220.30, 981,474.57 and 405,314.89 is: 559,329.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,220.30 : 981,474.57 = 405,314.89 : x
  2. Step 2: Convert to fraction form
    711,220.30/981,474.57 = 405,314.89/x
  3. Step 3: Cross multiply
    711,220.30x = 981,474.57 × 405,314.89
  4. Step 4: Simplify right side
    711,220.30x = 397,806,254,923.66
  5. Step 5: Solve for x
    x = 397,806,254,923.66/711,220.30
  6. Step 6: Final answer
    x = 559,329.16

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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.