Home / 645,423.20-968,005.20-308,463.20

Finding the Fourth Proportional to 645,423.20, 968,005.20 and 308,463.20

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Solution

The fourth proportional to 645,423.20, 968,005.20 and 308,463.20 is: 462,632.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,423.20 : 968,005.20 = 308,463.20 : x
  2. Step 2: Convert to fraction form
    645,423.20/968,005.20 = 308,463.20/x
  3. Step 3: Cross multiply
    645,423.20x = 968,005.20 × 308,463.20
  4. Step 4: Simplify right side
    645,423.20x = 298,593,981,608.64
  5. Step 5: Solve for x
    x = 298,593,981,608.64/645,423.20
  6. Step 6: Final answer
    x = 462,632.86

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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.