Home / 711,113.54-981,337.56-388,825.07

Finding the Fourth Proportional to 711,113.54, 981,337.56 and 388,825.07

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Solution

The fourth proportional to 711,113.54, 981,337.56 and 388,825.07 is: 536,579.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,113.54 : 981,337.56 = 388,825.07 : x
  2. Step 2: Convert to fraction form
    711,113.54/981,337.56 = 388,825.07/x
  3. Step 3: Cross multiply
    711,113.54x = 981,337.56 × 388,825.07
  4. Step 4: Simplify right side
    711,113.54x = 381,568,645,460.63
  5. Step 5: Solve for x
    x = 381,568,645,460.63/711,113.54
  6. Step 6: Final answer
    x = 536,579.07

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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.