Home / 860,334.40-1,290,501.60-487,086.40

Finding the Fourth Proportional to 860,334.40, 1,290,501.60 and 487,086.40

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Solution

The fourth proportional to 860,334.40, 1,290,501.60 and 487,086.40 is: 730,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,334.40 : 1,290,501.60 = 487,086.40 : x
  2. Step 2: Convert to fraction form
    860,334.40/1,290,501.60 = 487,086.40/x
  3. Step 3: Cross multiply
    860,334.40x = 1,290,501.60 × 487,086.40
  4. Step 4: Simplify right side
    860,334.40x = 628,585,778,538.24
  5. Step 5: Solve for x
    x = 628,585,778,538.24/860,334.40
  6. Step 6: Final answer
    x = 730,629.60

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Double scale
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Similar ratio
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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.