Home / 1,125,503.76-1,687,221.09-405,669.32

Finding the Fourth Proportional to 1,125,503.76, 1,687,221.09 and 405,669.32

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Solution

The fourth proportional to 1,125,503.76, 1,687,221.09 and 405,669.32 is: 608,131.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,125,503.76 : 1,687,221.09 = 405,669.32 : x
  2. Step 2: Convert to fraction form
    1,125,503.76/1,687,221.09 = 405,669.32/x
  3. Step 3: Cross multiply
    1,125,503.76x = 1,687,221.09 × 405,669.32
  4. Step 4: Simplify right side
    1,125,503.76x = 684,453,832,269.96
  5. Step 5: Solve for x
    x = 684,453,832,269.96/1,125,503.76
  6. Step 6: Final answer
    x = 608,131.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.