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Finding the Fourth Proportional to 707,661.45, 976,584.48 and 385,377.84

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Solution

The fourth proportional to 707,661.45, 976,584.48 and 385,377.84 is: 531,827.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,661.45 : 976,584.48 = 385,377.84 : x
  2. Step 2: Convert to fraction form
    707,661.45/976,584.48 = 385,377.84/x
  3. Step 3: Cross multiply
    707,661.45x = 976,584.48 × 385,377.84
  4. Step 4: Simplify right side
    707,661.45x = 376,354,017,479.92
  5. Step 5: Solve for x
    x = 376,354,017,479.92/707,661.45
  6. Step 6: Final answer
    x = 531,827.78

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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.