Home / 923,880.20-1,386,338.70-391,310.60

Finding the Fourth Proportional to 923,880.20, 1,386,338.70 and 391,310.60

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Solution

The fourth proportional to 923,880.20, 1,386,338.70 and 391,310.60 is: 587,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,880.20 : 1,386,338.70 = 391,310.60 : x
  2. Step 2: Convert to fraction form
    923,880.20/1,386,338.70 = 391,310.60/x
  3. Step 3: Cross multiply
    923,880.20x = 1,386,338.70 × 391,310.60
  4. Step 4: Simplify right side
    923,880.20x = 542,489,028,500.22
  5. Step 5: Solve for x
    x = 542,489,028,500.22/923,880.20
  6. Step 6: Final answer
    x = 587,185.47

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1.5x scale

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.