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Finding the Fourth Proportional to 707,355.60, 976,120.86 and 385,059

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Solution

The fourth proportional to 707,355.60, 976,120.86 and 385,059 is: 531,365.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,355.60 : 976,120.86 = 385,059 : x
  2. Step 2: Convert to fraction form
    707,355.60/976,120.86 = 385,059/x
  3. Step 3: Cross multiply
    707,355.60x = 976,120.86 × 385,059
  4. Step 4: Simplify right side
    707,355.60x = 375,864,122,230.74
  5. Step 5: Solve for x
    x = 375,864,122,230.74/707,355.60
  6. Step 6: Final answer
    x = 531,365.16

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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.