Home / 654,904.07-981,187.40-355,193.49

Finding the Fourth Proportional to 654,904.07, 981,187.40 and 355,193.49

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Solution

The fourth proportional to 654,904.07, 981,187.40 and 355,193.49 is: 532,156.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,904.07 : 981,187.40 = 355,193.49 : x
  2. Step 2: Convert to fraction form
    654,904.07/981,187.40 = 355,193.49/x
  3. Step 3: Cross multiply
    654,904.07x = 981,187.40 × 355,193.49
  4. Step 4: Simplify right side
    654,904.07x = 348,511,376,950.03
  5. Step 5: Solve for x
    x = 348,511,376,950.03/654,904.07
  6. Step 6: Final answer
    x = 532,156.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.