Home / 1,280,918.39-1,921,714.09-460,339.85

Finding the Fourth Proportional to 1,280,918.39, 1,921,714.09 and 460,339.85

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Solution

The fourth proportional to 1,280,918.39, 1,921,714.09 and 460,339.85 is: 690,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,918.39 : 1,921,714.09 = 460,339.85 : x
  2. Step 2: Convert to fraction form
    1,280,918.39/1,921,714.09 = 460,339.85/x
  3. Step 3: Cross multiply
    1,280,918.39x = 1,921,714.09 × 460,339.85
  4. Step 4: Simplify right side
    1,280,918.39x = 884,641,578,436.07
  5. Step 5: Solve for x
    x = 884,641,578,436.07/1,280,918.39
  6. Step 6: Final answer
    x = 690,630.71

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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.