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Finding the Fourth Proportional to 780,064.60, 1,168,128.60 and 622,600.60

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Solution

The fourth proportional to 780,064.60, 1,168,128.60 and 622,600.60 is: 932,329.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,064.60 : 1,168,128.60 = 622,600.60 : x
  2. Step 2: Convert to fraction form
    780,064.60/1,168,128.60 = 622,600.60/x
  3. Step 3: Cross multiply
    780,064.60x = 1,168,128.60 × 622,600.60
  4. Step 4: Simplify right side
    780,064.60x = 727,277,567,237.16
  5. Step 5: Solve for x
    x = 727,277,567,237.16/780,064.60
  6. Step 6: Final answer
    x = 932,329.92

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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.