Home / 815,731.50-1,223,721.36-416,154.06

Finding the Fourth Proportional to 815,731.50, 1,223,721.36 and 416,154.06

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Solution

The fourth proportional to 815,731.50, 1,223,721.36 and 416,154.06 is: 624,294.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,731.50 : 1,223,721.36 = 416,154.06 : x
  2. Step 2: Convert to fraction form
    815,731.50/1,223,721.36 = 416,154.06/x
  3. Step 3: Cross multiply
    815,731.50x = 1,223,721.36 × 416,154.06
  4. Step 4: Simplify right side
    815,731.50x = 509,256,612,272.72
  5. Step 5: Solve for x
    x = 509,256,612,272.72/815,731.50
  6. Step 6: Final answer
    x = 624,294.41

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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.