Home / 711,207.07-981,465.33-388,917.17

Finding the Fourth Proportional to 711,207.07, 981,465.33 and 388,917.17

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Solution

The fourth proportional to 711,207.07, 981,465.33 and 388,917.17 is: 536,705.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,207.07 : 981,465.33 = 388,917.17 : x
  2. Step 2: Convert to fraction form
    711,207.07/981,465.33 = 388,917.17/x
  3. Step 3: Cross multiply
    711,207.07x = 981,465.33 × 388,917.17
  4. Step 4: Simplify right side
    711,207.07x = 381,708,711,744.80
  5. Step 5: Solve for x
    x = 381,708,711,744.80/711,207.07
  6. Step 6: Final answer
    x = 536,705.46

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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.