Home / 820,019.20-1,230,201.60-346,460.80

Finding the Fourth Proportional to 820,019.20, 1,230,201.60 and 346,460.80

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Solution

The fourth proportional to 820,019.20, 1,230,201.60 and 346,460.80 is: 519,764.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,019.20 : 1,230,201.60 = 346,460.80 : x
  2. Step 2: Convert to fraction form
    820,019.20/1,230,201.60 = 346,460.80/x
  3. Step 3: Cross multiply
    820,019.20x = 1,230,201.60 × 346,460.80
  4. Step 4: Simplify right side
    820,019.20x = 426,216,630,497.28
  5. Step 5: Solve for x
    x = 426,216,630,497.28/820,019.20
  6. Step 6: Final answer
    x = 519,764.21

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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.