Home / 470,586.26-649,080.70-309,389.78

Finding the Fourth Proportional to 470,586.26, 649,080.70 and 309,389.78

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Solution

The fourth proportional to 470,586.26, 649,080.70 and 309,389.78 is: 426,742.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,586.26 : 649,080.70 = 309,389.78 : x
  2. Step 2: Convert to fraction form
    470,586.26/649,080.70 = 309,389.78/x
  3. Step 3: Cross multiply
    470,586.26x = 649,080.70 × 309,389.78
  4. Step 4: Simplify right side
    470,586.26x = 200,818,934,975.25
  5. Step 5: Solve for x
    x = 200,818,934,975.25/470,586.26
  6. Step 6: Final answer
    x = 426,742.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.