Home / 780,066.40-1,170,099.60-638,348.80

Finding the Fourth Proportional to 780,066.40, 1,170,099.60 and 638,348.80

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Solution

The fourth proportional to 780,066.40, 1,170,099.60 and 638,348.80 is: 957,523.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,066.40 : 1,170,099.60 = 638,348.80 : x
  2. Step 2: Convert to fraction form
    780,066.40/1,170,099.60 = 638,348.80/x
  3. Step 3: Cross multiply
    780,066.40x = 1,170,099.60 × 638,348.80
  4. Step 4: Simplify right side
    780,066.40x = 746,931,675,540.48
  5. Step 5: Solve for x
    x = 746,931,675,540.48/780,066.40
  6. Step 6: Final answer
    x = 957,523.20

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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.