Home / 711,220.04-981,500.70-405,289.84

Finding the Fourth Proportional to 711,220.04, 981,500.70 and 405,289.84

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Solution

The fourth proportional to 711,220.04, 981,500.70 and 405,289.84 is: 559,309.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,220.04 : 981,500.70 = 405,289.84 : x
  2. Step 2: Convert to fraction form
    711,220.04/981,500.70 = 405,289.84/x
  3. Step 3: Cross multiply
    711,220.04x = 981,500.70 × 405,289.84
  4. Step 4: Simplify right side
    711,220.04x = 397,792,261,662.89
  5. Step 5: Solve for x
    x = 397,792,261,662.89/711,220.04
  6. Step 6: Final answer
    x = 559,309.69

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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.