Home / 386,789.07-580,565.44-290,391.01

Finding the Fourth Proportional to 386,789.07, 580,565.44 and 290,391.01

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Solution

The fourth proportional to 386,789.07, 580,565.44 and 290,391.01 is: 435,873.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,789.07 : 580,565.44 = 290,391.01 : x
  2. Step 2: Convert to fraction form
    386,789.07/580,565.44 = 290,391.01/x
  3. Step 3: Cross multiply
    386,789.07x = 580,565.44 × 290,391.01
  4. Step 4: Simplify right side
    386,789.07x = 168,590,983,404.27
  5. Step 5: Solve for x
    x = 168,590,983,404.27/386,789.07
  6. Step 6: Final answer
    x = 435,873.18

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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.