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Finding the Fourth Proportional to 707,041, 975,716.74 and 389,089

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Solution

The fourth proportional to 707,041, 975,716.74 and 389,089 is: 536,942.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,041 : 975,716.74 = 389,089 : x
  2. Step 2: Convert to fraction form
    707,041/975,716.74 = 389,089/x
  3. Step 3: Cross multiply
    707,041x = 975,716.74 × 389,089
  4. Step 4: Simplify right side
    707,041x = 379,640,650,649.86
  5. Step 5: Solve for x
    x = 379,640,650,649.86/707,041
  6. Step 6: Final answer
    x = 536,942.91

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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.