Home / 403,782.04-553,183.37-388,647.88

Finding the Fourth Proportional to 403,782.04, 553,183.37 and 388,647.88

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Solution

The fourth proportional to 403,782.04, 553,183.37 and 388,647.88 is: 532,449.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,782.04 : 553,183.37 = 388,647.88 : x
  2. Step 2: Convert to fraction form
    403,782.04/553,183.37 = 388,647.88/x
  3. Step 3: Cross multiply
    403,782.04x = 553,183.37 × 388,647.88
  4. Step 4: Simplify right side
    403,782.04x = 214,993,544,001.76
  5. Step 5: Solve for x
    x = 214,993,544,001.76/403,782.04
  6. Step 6: Final answer
    x = 532,449.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.