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Finding the Fourth Proportional to 483,253.80, 666,868.62 and 289,768.32

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Solution

The fourth proportional to 483,253.80, 666,868.62 and 289,768.32 is: 399,867.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,253.80 : 666,868.62 = 289,768.32 : x
  2. Step 2: Convert to fraction form
    483,253.80/666,868.62 = 289,768.32/x
  3. Step 3: Cross multiply
    483,253.80x = 666,868.62 × 289,768.32
  4. Step 4: Simplify right side
    483,253.80x = 193,237,399,678.12
  5. Step 5: Solve for x
    x = 193,237,399,678.12/483,253.80
  6. Step 6: Final answer
    x = 399,867.32

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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.