Home / 711,077.86-981,287.53-388,788.18

Finding the Fourth Proportional to 711,077.86, 981,287.53 and 388,788.18

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Solution

The fourth proportional to 711,077.86, 981,287.53 and 388,788.18 is: 536,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,077.86 : 981,287.53 = 388,788.18 : x
  2. Step 2: Convert to fraction form
    711,077.86/981,287.53 = 388,788.18/x
  3. Step 3: Cross multiply
    711,077.86x = 981,287.53 × 388,788.18
  4. Step 4: Simplify right side
    711,077.86x = 381,512,992,845.40
  5. Step 5: Solve for x
    x = 381,512,992,845.40/711,077.86
  6. Step 6: Final answer
    x = 536,527.73

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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.