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Finding the Fourth Proportional to 702,622.69, 969,619.89 and 380,331.79

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Solution

The fourth proportional to 702,622.69, 969,619.89 and 380,331.79 is: 524,858.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,622.69 : 969,619.89 = 380,331.79 : x
  2. Step 2: Convert to fraction form
    702,622.69/969,619.89 = 380,331.79/x
  3. Step 3: Cross multiply
    702,622.69x = 969,619.89 × 380,331.79
  4. Step 4: Simplify right side
    702,622.69x = 368,777,268,383.30
  5. Step 5: Solve for x
    x = 368,777,268,383.30/702,622.69
  6. Step 6: Final answer
    x = 524,858.18

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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.