Home / 776,860.80-1,165,329.60-403,612.80

Finding the Fourth Proportional to 776,860.80, 1,165,329.60 and 403,612.80

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Solution

The fourth proportional to 776,860.80, 1,165,329.60 and 403,612.80 is: 605,439.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,860.80 : 1,165,329.60 = 403,612.80 : x
  2. Step 2: Convert to fraction form
    776,860.80/1,165,329.60 = 403,612.80/x
  3. Step 3: Cross multiply
    776,860.80x = 1,165,329.60 × 403,612.80
  4. Step 4: Simplify right side
    776,860.80x = 470,341,942,778.88
  5. Step 5: Solve for x
    x = 470,341,942,778.88/776,860.80
  6. Step 6: Final answer
    x = 605,439.15

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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.