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Finding the Fourth Proportional to 1,322,169, 1,983,394.44 and 423,289.32

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Solution

The fourth proportional to 1,322,169, 1,983,394.44 and 423,289.32 is: 634,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322,169 : 1,983,394.44 = 423,289.32 : x
  2. Step 2: Convert to fraction form
    1,322,169/1,983,394.44 = 423,289.32/x
  3. Step 3: Cross multiply
    1,322,169x = 1,983,394.44 × 423,289.32
  4. Step 4: Simplify right side
    1,322,169x = 839,549,683,799.38
  5. Step 5: Solve for x
    x = 839,549,683,799.38/1,322,169
  6. Step 6: Final answer
    x = 634,979.10

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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.