Home / 645,990.32-968,911.65-172,712.58

Finding the Fourth Proportional to 645,990.32, 968,911.65 and 172,712.58

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Solution

The fourth proportional to 645,990.32, 968,911.65 and 172,712.58 is: 259,049.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,990.32 : 968,911.65 = 172,712.58 : x
  2. Step 2: Convert to fraction form
    645,990.32/968,911.65 = 172,712.58/x
  3. Step 3: Cross multiply
    645,990.32x = 968,911.65 × 172,712.58
  4. Step 4: Simplify right side
    645,990.32x = 167,343,230,863.56
  5. Step 5: Solve for x
    x = 167,343,230,863.56/645,990.32
  6. Step 6: Final answer
    x = 259,049.13

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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.