Home / 645,628.20-968,312.70-308,668.20

Finding the Fourth Proportional to 645,628.20, 968,312.70 and 308,668.20

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Solution

The fourth proportional to 645,628.20, 968,312.70 and 308,668.20 is: 462,940.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,628.20 : 968,312.70 = 308,668.20 : x
  2. Step 2: Convert to fraction form
    645,628.20/968,312.70 = 308,668.20/x
  3. Step 3: Cross multiply
    645,628.20x = 968,312.70 × 308,668.20
  4. Step 4: Simplify right side
    645,628.20x = 298,887,338,146.14
  5. Step 5: Solve for x
    x = 298,887,338,146.14/645,628.20
  6. Step 6: Final answer
    x = 462,940.34

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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.