Home / 579,830.20-869,745.30-540,464.20

Finding the Fourth Proportional to 579,830.20, 869,745.30 and 540,464.20

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Solution

The fourth proportional to 579,830.20, 869,745.30 and 540,464.20 is: 810,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,830.20 : 869,745.30 = 540,464.20 : x
  2. Step 2: Convert to fraction form
    579,830.20/869,745.30 = 540,464.20/x
  3. Step 3: Cross multiply
    579,830.20x = 869,745.30 × 540,464.20
  4. Step 4: Simplify right side
    579,830.20x = 470,066,197,768.26
  5. Step 5: Solve for x
    x = 470,066,197,768.26/579,830.20
  6. Step 6: Final answer
    x = 810,696.30

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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.