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Finding the Fourth Proportional to 707,376.43, 976,191.92 and 385,095.79

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Solution

The fourth proportional to 707,376.43, 976,191.92 and 385,095.79 is: 531,438.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,376.43 : 976,191.92 = 385,095.79 : x
  2. Step 2: Convert to fraction form
    707,376.43/976,191.92 = 385,095.79/x
  3. Step 3: Cross multiply
    707,376.43x = 976,191.92 × 385,095.79
  4. Step 4: Simplify right side
    707,376.43x = 375,927,396,698.54
  5. Step 5: Solve for x
    x = 375,927,396,698.54/707,376.43
  6. Step 6: Final answer
    x = 531,438.96

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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.