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Finding the Fourth Proportional to 1,669,894.75, 2,304,459.21 and 905,948.32

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Solution

The fourth proportional to 1,669,894.75, 2,304,459.21 and 905,948.32 is: 1,250,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669,894.75 : 2,304,459.21 = 905,948.32 : x
  2. Step 2: Convert to fraction form
    1,669,894.75/2,304,459.21 = 905,948.32/x
  3. Step 3: Cross multiply
    1,669,894.75x = 2,304,459.21 × 905,948.32
  4. Step 4: Simplify right side
    1,669,894.75x = 2,087,720,949,808.03
  5. Step 5: Solve for x
    x = 2,087,720,949,808.03/1,669,894.75
  6. Step 6: Final answer
    x = 1,250,211.10

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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.