Home / 859,200.45-1,288,966.64-326,680.09

Finding the Fourth Proportional to 859,200.45, 1,288,966.64 and 326,680.09

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Solution

The fourth proportional to 859,200.45, 1,288,966.64 and 326,680.09 is: 490,083.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,200.45 : 1,288,966.64 = 326,680.09 : x
  2. Step 2: Convert to fraction form
    859,200.45/1,288,966.64 = 326,680.09/x
  3. Step 3: Cross multiply
    859,200.45x = 1,288,966.64 × 326,680.09
  4. Step 4: Simplify right side
    859,200.45x = 421,079,733,106.38
  5. Step 5: Solve for x
    x = 421,079,733,106.38/859,200.45
  6. Step 6: Final answer
    x = 490,083.23

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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.