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Finding the Fourth Proportional to 1,508,575, 2,081,239.70 and 863,647.56

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Solution

The fourth proportional to 1,508,575, 2,081,239.70 and 863,647.56 is: 1,191,493.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508,575 : 2,081,239.70 = 863,647.56 : x
  2. Step 2: Convert to fraction form
    1,508,575/2,081,239.70 = 863,647.56/x
  3. Step 3: Cross multiply
    1,508,575x = 2,081,239.70 × 863,647.56
  4. Step 4: Simplify right side
    1,508,575x = 1,797,457,588,680.13
  5. Step 5: Solve for x
    x = 1,797,457,588,680.13/1,508,575
  6. Step 6: Final answer
    x = 1,191,493.69

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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.