Home / 711,121.60-981,348.72-405,184.60

Finding the Fourth Proportional to 711,121.60, 981,348.72 and 405,184.60

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Solution

The fourth proportional to 711,121.60, 981,348.72 and 405,184.60 is: 559,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,121.60 : 981,348.72 = 405,184.60 : x
  2. Step 2: Convert to fraction form
    711,121.60/981,348.72 = 405,184.60/x
  3. Step 3: Cross multiply
    711,121.60x = 981,348.72 × 405,184.60
  4. Step 4: Simplify right side
    711,121.60x = 397,627,388,573.71
  5. Step 5: Solve for x
    x = 397,627,388,573.71/711,121.60
  6. Step 6: Final answer
    x = 559,155.27

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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.