Home / 739,393.80-1,109,090.42-290,325.96

Finding the Fourth Proportional to 739,393.80, 1,109,090.42 and 290,325.96

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Solution

The fourth proportional to 739,393.80, 1,109,090.42 and 290,325.96 is: 435,488.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,393.80 : 1,109,090.42 = 290,325.96 : x
  2. Step 2: Convert to fraction form
    739,393.80/1,109,090.42 = 290,325.96/x
  3. Step 3: Cross multiply
    739,393.80x = 1,109,090.42 × 290,325.96
  4. Step 4: Simplify right side
    739,393.80x = 321,997,740,913.30
  5. Step 5: Solve for x
    x = 321,997,740,913.30/739,393.80
  6. Step 6: Final answer
    x = 435,488.83

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Double scale
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1.5x scale

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.