Home / 920,721.89-1,270,660.07-558,161.03

Finding the Fourth Proportional to 920,721.89, 1,270,660.07 and 558,161.03

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Solution

The fourth proportional to 920,721.89, 1,270,660.07 and 558,161.03 is: 770,300.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,721.89 : 1,270,660.07 = 558,161.03 : x
  2. Step 2: Convert to fraction form
    920,721.89/1,270,660.07 = 558,161.03/x
  3. Step 3: Cross multiply
    920,721.89x = 1,270,660.07 × 558,161.03
  4. Step 4: Simplify right side
    920,721.89x = 709,232,924,306.97
  5. Step 5: Solve for x
    x = 709,232,924,306.97/920,721.89
  6. Step 6: Final answer
    x = 770,300.93

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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.