Home / 711,334.19-981,628.84-389,037.22

Finding the Fourth Proportional to 711,334.19, 981,628.84 and 389,037.22

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Solution

The fourth proportional to 711,334.19, 981,628.84 and 389,037.22 is: 536,864.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,334.19 : 981,628.84 = 389,037.22 : x
  2. Step 2: Convert to fraction form
    711,334.19/981,628.84 = 389,037.22/x
  3. Step 3: Cross multiply
    711,334.19x = 981,628.84 × 389,037.22
  4. Step 4: Simplify right side
    711,334.19x = 381,890,153,017.65
  5. Step 5: Solve for x
    x = 381,890,153,017.65/711,334.19
  6. Step 6: Final answer
    x = 536,864.61

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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.