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Finding the Fourth Proportional to 707,293.43, 976,077.40 and 385,012.79

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Solution

The fourth proportional to 707,293.43, 976,077.40 and 385,012.79 is: 531,324.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,293.43 : 976,077.40 = 385,012.79 : x
  2. Step 2: Convert to fraction form
    707,293.43/976,077.40 = 385,012.79/x
  3. Step 3: Cross multiply
    707,293.43x = 976,077.40 × 385,012.79
  4. Step 4: Simplify right side
    707,293.43x = 375,802,281,104.88
  5. Step 5: Solve for x
    x = 375,802,281,104.88/707,293.43
  6. Step 6: Final answer
    x = 531,324.43

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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.