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Finding the Fourth Proportional to 1,080,100, 1,490,538 and 603,172

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Solution

The fourth proportional to 1,080,100, 1,490,538 and 603,172 is: 832,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,100 : 1,490,538 = 603,172 : x
  2. Step 2: Convert to fraction form
    1,080,100/1,490,538 = 603,172/x
  3. Step 3: Cross multiply
    1,080,100x = 1,490,538 × 603,172
  4. Step 4: Simplify right side
    1,080,100x = 899,050,786,536
  5. Step 5: Solve for x
    x = 899,050,786,536/1,080,100
  6. Step 6: Final answer
    x = 832,377.36

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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.