Home / 739,945.04-1,109,486.80-290,138.68

Finding the Fourth Proportional to 739,945.04, 1,109,486.80 and 290,138.68

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Solution

The fourth proportional to 739,945.04, 1,109,486.80 and 290,138.68 is: 435,039.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,945.04 : 1,109,486.80 = 290,138.68 : x
  2. Step 2: Convert to fraction form
    739,945.04/1,109,486.80 = 290,138.68/x
  3. Step 3: Cross multiply
    739,945.04x = 1,109,486.80 × 290,138.68
  4. Step 4: Simplify right side
    739,945.04x = 321,905,035,629.42
  5. Step 5: Solve for x
    x = 321,905,035,629.42/739,945.04
  6. Step 6: Final answer
    x = 435,039.12

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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.