Home / 711,478.54-981,827.49-389,185.82

Finding the Fourth Proportional to 711,478.54, 981,827.49 and 389,185.82

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Solution

The fourth proportional to 711,478.54, 981,827.49 and 389,185.82 is: 537,069.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,478.54 : 981,827.49 = 389,185.82 : x
  2. Step 2: Convert to fraction form
    711,478.54/981,827.49 = 389,185.82/x
  3. Step 3: Cross multiply
    711,478.54x = 981,827.49 × 389,185.82
  4. Step 4: Simplify right side
    711,478.54x = 382,113,336,794.19
  5. Step 5: Solve for x
    x = 382,113,336,794.19/711,478.54
  6. Step 6: Final answer
    x = 537,069.38

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Double scale
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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.