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Finding the Fourth Proportional to 483,490, 666,523.28 and 339,804.08

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Solution

The fourth proportional to 483,490, 666,523.28 and 339,804.08 is: 468,442.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,490 : 666,523.28 = 339,804.08 : x
  2. Step 2: Convert to fraction form
    483,490/666,523.28 = 339,804.08/x
  3. Step 3: Cross multiply
    483,490x = 666,523.28 × 339,804.08
  4. Step 4: Simplify right side
    483,490x = 226,487,329,958.98
  5. Step 5: Solve for x
    x = 226,487,329,958.98/483,490
  6. Step 6: Final answer
    x = 468,442.64

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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.