Home / 865,665.32-1,298,563.20-258,405.64

Finding the Fourth Proportional to 865,665.32, 1,298,563.20 and 258,405.64

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Solution

The fourth proportional to 865,665.32, 1,298,563.20 and 258,405.64 is: 387,627.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,665.32 : 1,298,563.20 = 258,405.64 : x
  2. Step 2: Convert to fraction form
    865,665.32/1,298,563.20 = 258,405.64/x
  3. Step 3: Cross multiply
    865,665.32x = 1,298,563.20 × 258,405.64
  4. Step 4: Simplify right side
    865,665.32x = 335,556,051,530.04
  5. Step 5: Solve for x
    x = 335,556,051,530.04/865,665.32
  6. Step 6: Final answer
    x = 387,627.93

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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.