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Finding the Fourth Proportional to 707,578.39, 976,457.46 and 385,290.73

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Solution

The fourth proportional to 707,578.39, 976,457.46 and 385,290.73 is: 531,700.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,578.39 : 976,457.46 = 385,290.73 : x
  2. Step 2: Convert to fraction form
    707,578.39/976,457.46 = 385,290.73/x
  3. Step 3: Cross multiply
    707,578.39x = 976,457.46 × 385,290.73
  4. Step 4: Simplify right side
    707,578.39x = 376,220,007,577.35
  5. Step 5: Solve for x
    x = 376,220,007,577.35/707,578.39
  6. Step 6: Final answer
    x = 531,700.82

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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.