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Finding the Fourth Proportional to 788,708.80, 1,183,354.80 and 256,247.20

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Solution

The fourth proportional to 788,708.80, 1,183,354.80 and 256,247.20 is: 384,465.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,708.80 : 1,183,354.80 = 256,247.20 : x
  2. Step 2: Convert to fraction form
    788,708.80/1,183,354.80 = 256,247.20/x
  3. Step 3: Cross multiply
    788,708.80x = 1,183,354.80 × 256,247.20
  4. Step 4: Simplify right side
    788,708.80x = 303,231,354,106.56
  5. Step 5: Solve for x
    x = 303,231,354,106.56/788,708.80
  6. Step 6: Final answer
    x = 384,465.54

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Double scale
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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.