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Finding the Fourth Proportional to 456,708.60, 685,062.90 and 220,512.60

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Solution

The fourth proportional to 456,708.60, 685,062.90 and 220,512.60 is: 330,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,708.60 : 685,062.90 = 220,512.60 : x
  2. Step 2: Convert to fraction form
    456,708.60/685,062.90 = 220,512.60/x
  3. Step 3: Cross multiply
    456,708.60x = 685,062.90 × 220,512.60
  4. Step 4: Simplify right side
    456,708.60x = 151,065,001,242.54
  5. Step 5: Solve for x
    x = 151,065,001,242.54/456,708.60
  6. Step 6: Final answer
    x = 330,768.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.