Home / 1,640,790.92-2,264,020.63-915,636.89

Finding the Fourth Proportional to 1,640,790.92, 2,264,020.63 and 915,636.89

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Solution

The fourth proportional to 1,640,790.92, 2,264,020.63 and 915,636.89 is: 1,263,427.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640,790.92 : 2,264,020.63 = 915,636.89 : x
  2. Step 2: Convert to fraction form
    1,640,790.92/2,264,020.63 = 915,636.89/x
  3. Step 3: Cross multiply
    1,640,790.92x = 2,264,020.63 × 915,636.89
  4. Step 4: Simplify right side
    1,640,790.92x = 2,073,020,811,920
  5. Step 5: Solve for x
    x = 2,073,020,811,920/1,640,790.92
  6. Step 6: Final answer
    x = 1,263,427.77

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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.