Home / 780,055.20-1,170,082.80-638,337.60

Finding the Fourth Proportional to 780,055.20, 1,170,082.80 and 638,337.60

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Solution

The fourth proportional to 780,055.20, 1,170,082.80 and 638,337.60 is: 957,506.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,055.20 : 1,170,082.80 = 638,337.60 : x
  2. Step 2: Convert to fraction form
    780,055.20/1,170,082.80 = 638,337.60/x
  3. Step 3: Cross multiply
    780,055.20x = 1,170,082.80 × 638,337.60
  4. Step 4: Simplify right side
    780,055.20x = 746,907,846,353.28
  5. Step 5: Solve for x
    x = 746,907,846,353.28/780,055.20
  6. Step 6: Final answer
    x = 957,506.40

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Similar ratio
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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.