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Finding the Fourth Proportional to 482,771.64, 666,156.86 and 289,133.98

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Solution

The fourth proportional to 482,771.64, 666,156.86 and 289,133.98 is: 398,964.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,771.64 : 666,156.86 = 289,133.98 : x
  2. Step 2: Convert to fraction form
    482,771.64/666,156.86 = 289,133.98/x
  3. Step 3: Cross multiply
    482,771.64x = 666,156.86 × 289,133.98
  4. Step 4: Simplify right side
    482,771.64x = 192,608,579,459.65
  5. Step 5: Solve for x
    x = 192,608,579,459.65/482,771.64
  6. Step 6: Final answer
    x = 398,964.16

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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.