Home / 711,026.96-981,206.76-388,738.32

Finding the Fourth Proportional to 711,026.96, 981,206.76 and 388,738.32

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Solution

The fourth proportional to 711,026.96, 981,206.76 and 388,738.32 is: 536,453.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,026.96 : 981,206.76 = 388,738.32 : x
  2. Step 2: Convert to fraction form
    711,026.96/981,206.76 = 388,738.32/x
  3. Step 3: Cross multiply
    711,026.96x = 981,206.76 × 388,738.32
  4. Step 4: Simplify right side
    711,026.96x = 381,432,667,455.04
  5. Step 5: Solve for x
    x = 381,432,667,455.04/711,026.96
  6. Step 6: Final answer
    x = 536,453.17

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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.