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Finding the Fourth Proportional to 1,086,907, 1,499,978.51 and 603,472.21

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Solution

The fourth proportional to 1,086,907, 1,499,978.51 and 603,472.21 is: 832,817.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,907 : 1,499,978.51 = 603,472.21 : x
  2. Step 2: Convert to fraction form
    1,086,907/1,499,978.51 = 603,472.21/x
  3. Step 3: Cross multiply
    1,086,907x = 1,499,978.51 × 603,472.21
  4. Step 4: Simplify right side
    1,086,907x = 905,195,346,382.21
  5. Step 5: Solve for x
    x = 905,195,346,382.21/1,086,907
  6. Step 6: Final answer
    x = 832,817.66

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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.