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Finding the Fourth Proportional to 1,281,844.32, 1,921,084.56 and 943,300.32

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Solution

The fourth proportional to 1,281,844.32, 1,921,084.56 and 943,300.32 is: 1,413,712.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,844.32 : 1,921,084.56 = 943,300.32 : x
  2. Step 2: Convert to fraction form
    1,281,844.32/1,921,084.56 = 943,300.32/x
  3. Step 3: Cross multiply
    1,281,844.32x = 1,921,084.56 × 943,300.32
  4. Step 4: Simplify right side
    1,281,844.32x = 1,812,159,680,195.06
  5. Step 5: Solve for x
    x = 1,812,159,680,195.06/1,281,844.32
  6. Step 6: Final answer
    x = 1,413,712.77

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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.