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Finding the Fourth Proportional to 453,995.20, 680,992.80 and 288,516.80

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Solution

The fourth proportional to 453,995.20, 680,992.80 and 288,516.80 is: 432,775.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,995.20 : 680,992.80 = 288,516.80 : x
  2. Step 2: Convert to fraction form
    453,995.20/680,992.80 = 288,516.80/x
  3. Step 3: Cross multiply
    453,995.20x = 680,992.80 × 288,516.80
  4. Step 4: Simplify right side
    453,995.20x = 196,477,863,479.04
  5. Step 5: Solve for x
    x = 196,477,863,479.04/453,995.20
  6. Step 6: Final answer
    x = 432,775.20

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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.