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Finding the Fourth Proportional to 613,485.41, 846,390.75 and 355,221.41

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Solution

The fourth proportional to 613,485.41, 846,390.75 and 355,221.41 is: 490,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,485.41 : 846,390.75 = 355,221.41 : x
  2. Step 2: Convert to fraction form
    613,485.41/846,390.75 = 355,221.41/x
  3. Step 3: Cross multiply
    613,485.41x = 846,390.75 × 355,221.41
  4. Step 4: Simplify right side
    613,485.41x = 300,656,111,394.00
  5. Step 5: Solve for x
    x = 300,656,111,394.00/613,485.41
  6. Step 6: Final answer
    x = 490,078.67

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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.