Home / 826,090.14-1,238,413.50-320,302.65

Finding the Fourth Proportional to 826,090.14, 1,238,413.50 and 320,302.65

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Solution

The fourth proportional to 826,090.14, 1,238,413.50 and 320,302.65 is: 480,174.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,090.14 : 1,238,413.50 = 320,302.65 : x
  2. Step 2: Convert to fraction form
    826,090.14/1,238,413.50 = 320,302.65/x
  3. Step 3: Cross multiply
    826,090.14x = 1,238,413.50 × 320,302.65
  4. Step 4: Simplify right side
    826,090.14x = 396,667,125,845.78
  5. Step 5: Solve for x
    x = 396,667,125,845.78/826,090.14
  6. Step 6: Final answer
    x = 480,174.14

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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.