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Finding the Fourth Proportional to 911,896.83, 1,367,872.88 and 312,849.32

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Solution

The fourth proportional to 911,896.83, 1,367,872.88 and 312,849.32 is: 469,283.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,896.83 : 1,367,872.88 = 312,849.32 : x
  2. Step 2: Convert to fraction form
    911,896.83/1,367,872.88 = 312,849.32/x
  3. Step 3: Cross multiply
    911,896.83x = 1,367,872.88 × 312,849.32
  4. Step 4: Simplify right side
    911,896.83x = 427,938,091,950.83
  5. Step 5: Solve for x
    x = 427,938,091,950.83/911,896.83
  6. Step 6: Final answer
    x = 469,283.45

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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.