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Finding the Fourth Proportional to 707,519.56, 976,394.48 and 385,247.28

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Solution

The fourth proportional to 707,519.56, 976,394.48 and 385,247.28 is: 531,650.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,519.56 : 976,394.48 = 385,247.28 : x
  2. Step 2: Convert to fraction form
    707,519.56/976,394.48 = 385,247.28/x
  3. Step 3: Cross multiply
    707,519.56x = 976,394.48 × 385,247.28
  4. Step 4: Simplify right side
    707,519.56x = 376,153,317,627.01
  5. Step 5: Solve for x
    x = 376,153,317,627.01/707,519.56
  6. Step 6: Final answer
    x = 531,650.77

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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.