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Finding the Fourth Proportional to 707,584.41, 976,478.13 and 385,300.80

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Solution

The fourth proportional to 707,584.41, 976,478.13 and 385,300.80 is: 531,721.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,584.41 : 976,478.13 = 385,300.80 : x
  2. Step 2: Convert to fraction form
    707,584.41/976,478.13 = 385,300.80/x
  3. Step 3: Cross multiply
    707,584.41x = 976,478.13 × 385,300.80
  4. Step 4: Simplify right side
    707,584.41x = 376,237,804,671.50
  5. Step 5: Solve for x
    x = 376,237,804,671.50/707,584.41
  6. Step 6: Final answer
    x = 531,721.44

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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.