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Finding the Fourth Proportional to 622,783.49, 859,504.67 and 381,225.69

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Solution

The fourth proportional to 622,783.49, 859,504.67 and 381,225.69 is: 526,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,783.49 : 859,504.67 = 381,225.69 : x
  2. Step 2: Convert to fraction form
    622,783.49/859,504.67 = 381,225.69/x
  3. Step 3: Cross multiply
    622,783.49x = 859,504.67 × 381,225.69
  4. Step 4: Simplify right side
    622,783.49x = 327,665,260,402.44
  5. Step 5: Solve for x
    x = 327,665,260,402.44/622,783.49
  6. Step 6: Final answer
    x = 526,130.30

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Double scale
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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.