Home / 1,280,554.29-1,920,809.52-381,998.61

Finding the Fourth Proportional to 1,280,554.29, 1,920,809.52 and 381,998.61

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Solution

The fourth proportional to 1,280,554.29, 1,920,809.52 and 381,998.61 is: 572,991.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,554.29 : 1,920,809.52 = 381,998.61 : x
  2. Step 2: Convert to fraction form
    1,280,554.29/1,920,809.52 = 381,998.61/x
  3. Step 3: Cross multiply
    1,280,554.29x = 1,920,809.52 × 381,998.61
  4. Step 4: Simplify right side
    1,280,554.29x = 733,746,566,714.77
  5. Step 5: Solve for x
    x = 733,746,566,714.77/1,280,554.29
  6. Step 6: Final answer
    x = 572,991.38

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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.