Home / 711,320.28-981,560.56-401,205.78

Finding the Fourth Proportional to 711,320.28, 981,560.56 and 401,205.78

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Solution

The fourth proportional to 711,320.28, 981,560.56 and 401,205.78 is: 553,629.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,320.28 : 981,560.56 = 401,205.78 : x
  2. Step 2: Convert to fraction form
    711,320.28/981,560.56 = 401,205.78/x
  3. Step 3: Cross multiply
    711,320.28x = 981,560.56 × 401,205.78
  4. Step 4: Simplify right side
    711,320.28x = 393,807,770,092.04
  5. Step 5: Solve for x
    x = 393,807,770,092.04/711,320.28
  6. Step 6: Final answer
    x = 553,629.33

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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.