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Finding the Fourth Proportional to 613,825.48, 847,080.93 and 355,752.55

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Solution

The fourth proportional to 613,825.48, 847,080.93 and 355,752.55 is: 490,939.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,825.48 : 847,080.93 = 355,752.55 : x
  2. Step 2: Convert to fraction form
    613,825.48/847,080.93 = 355,752.55/x
  3. Step 3: Cross multiply
    613,825.48x = 847,080.93 × 355,752.55
  4. Step 4: Simplify right side
    613,825.48x = 301,351,200,903.87
  5. Step 5: Solve for x
    x = 301,351,200,903.87/613,825.48
  6. Step 6: Final answer
    x = 490,939.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.