Home / 450,683.28-621,224.10-305,443.80

Finding the Fourth Proportional to 450,683.28, 621,224.10 and 305,443.80

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Solution

The fourth proportional to 450,683.28, 621,224.10 and 305,443.80 is: 421,025.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,683.28 : 621,224.10 = 305,443.80 : x
  2. Step 2: Convert to fraction form
    450,683.28/621,224.10 = 305,443.80/x
  3. Step 3: Cross multiply
    450,683.28x = 621,224.10 × 305,443.80
  4. Step 4: Simplify right side
    450,683.28x = 189,749,049,755.58
  5. Step 5: Solve for x
    x = 189,749,049,755.58/450,683.28
  6. Step 6: Final answer
    x = 421,025.27

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1.5x scale

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.