Home / 711,114.04-981,338.25-388,825.57

Finding the Fourth Proportional to 711,114.04, 981,338.25 and 388,825.57

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Solution

The fourth proportional to 711,114.04, 981,338.25 and 388,825.57 is: 536,579.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,114.04 : 981,338.25 = 388,825.57 : x
  2. Step 2: Convert to fraction form
    711,114.04/981,338.25 = 388,825.57/x
  3. Step 3: Cross multiply
    711,114.04x = 981,338.25 × 388,825.57
  4. Step 4: Simplify right side
    711,114.04x = 381,569,404,419.05
  5. Step 5: Solve for x
    x = 381,569,404,419.05/711,114.04
  6. Step 6: Final answer
    x = 536,579.76

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Double scale
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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.