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Finding the Fourth Proportional to 685,570.24, 946,075.08 and 379,640.56

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Solution

The fourth proportional to 685,570.24, 946,075.08 and 379,640.56 is: 523,897.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,570.24 : 946,075.08 = 379,640.56 : x
  2. Step 2: Convert to fraction form
    685,570.24/946,075.08 = 379,640.56/x
  3. Step 3: Cross multiply
    685,570.24x = 946,075.08 × 379,640.56
  4. Step 4: Simplify right side
    685,570.24x = 359,168,473,173.25
  5. Step 5: Solve for x
    x = 359,168,473,173.25/685,570.24
  6. Step 6: Final answer
    x = 523,897.41

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1.5x scale

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.