Home / 470,568.96-649,655.36-309,890.56

Finding the Fourth Proportional to 470,568.96, 649,655.36 and 309,890.56

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Solution

The fourth proportional to 470,568.96, 649,655.36 and 309,890.56 is: 427,826.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,568.96 : 649,655.36 = 309,890.56 : x
  2. Step 2: Convert to fraction form
    470,568.96/649,655.36 = 309,890.56/x
  3. Step 3: Cross multiply
    470,568.96x = 649,655.36 × 309,890.56
  4. Step 4: Simplify right side
    470,568.96x = 201,322,063,317.40
  5. Step 5: Solve for x
    x = 201,322,063,317.40/470,568.96
  6. Step 6: Final answer
    x = 427,826.91

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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.