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Finding the Fourth Proportional to 707,511.66, 976,383.60 and 385,239.42

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Solution

The fourth proportional to 707,511.66, 976,383.60 and 385,239.42 is: 531,639.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,511.66 : 976,383.60 = 385,239.42 : x
  2. Step 2: Convert to fraction form
    707,511.66/976,383.60 = 385,239.42/x
  3. Step 3: Cross multiply
    707,511.66x = 976,383.60 × 385,239.42
  4. Step 4: Simplify right side
    707,511.66x = 376,141,451,761.51
  5. Step 5: Solve for x
    x = 376,141,451,761.51/707,511.66
  6. Step 6: Final answer
    x = 531,639.93

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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.