Home / 685,974.88-946,753.28-391,625.34

Finding the Fourth Proportional to 685,974.88, 946,753.28 and 391,625.34

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Solution

The fourth proportional to 685,974.88, 946,753.28 and 391,625.34 is: 540,504.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,974.88 : 946,753.28 = 391,625.34 : x
  2. Step 2: Convert to fraction form
    685,974.88/946,753.28 = 391,625.34/x
  3. Step 3: Cross multiply
    685,974.88x = 946,753.28 × 391,625.34
  4. Step 4: Simplify right side
    685,974.88x = 370,772,575,176.12
  5. Step 5: Solve for x
    x = 370,772,575,176.12/685,974.88
  6. Step 6: Final answer
    x = 540,504.60

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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.