Home / 815,153.60-1,222,730.40-628,529.60

Finding the Fourth Proportional to 815,153.60, 1,222,730.40 and 628,529.60

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Solution

The fourth proportional to 815,153.60, 1,222,730.40 and 628,529.60 is: 942,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,153.60 : 1,222,730.40 = 628,529.60 : x
  2. Step 2: Convert to fraction form
    815,153.60/1,222,730.40 = 628,529.60/x
  3. Step 3: Cross multiply
    815,153.60x = 1,222,730.40 × 628,529.60
  4. Step 4: Simplify right side
    815,153.60x = 768,522,249,219.84
  5. Step 5: Solve for x
    x = 768,522,249,219.84/815,153.60
  6. Step 6: Final answer
    x = 942,794.40

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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.