Home / 711,209.26-981,434.19-405,357.58

Finding the Fourth Proportional to 711,209.26, 981,434.19 and 405,357.58

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Solution

The fourth proportional to 711,209.26, 981,434.19 and 405,357.58 is: 559,373.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,209.26 : 981,434.19 = 405,357.58 : x
  2. Step 2: Convert to fraction form
    711,209.26/981,434.19 = 405,357.58/x
  3. Step 3: Cross multiply
    711,209.26x = 981,434.19 × 405,357.58
  4. Step 4: Simplify right side
    711,209.26x = 397,831,788,187.66
  5. Step 5: Solve for x
    x = 397,831,788,187.66/711,209.26
  6. Step 6: Final answer
    x = 559,373.75

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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.