Home / 705,704.54-1,058,667.57-421,715.84

Finding the Fourth Proportional to 705,704.54, 1,058,667.57 and 421,715.84

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Solution

The fourth proportional to 705,704.54, 1,058,667.57 and 421,715.84 is: 632,639.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,704.54 : 1,058,667.57 = 421,715.84 : x
  2. Step 2: Convert to fraction form
    705,704.54/1,058,667.57 = 421,715.84/x
  3. Step 3: Cross multiply
    705,704.54x = 1,058,667.57 × 421,715.84
  4. Step 4: Simplify right side
    705,704.54x = 446,456,878,269.97
  5. Step 5: Solve for x
    x = 446,456,878,269.97/705,704.54
  6. Step 6: Final answer
    x = 632,639.95

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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.