Home / 683,303.60-1,024,955.40-388,391.60

Finding the Fourth Proportional to 683,303.60, 1,024,955.40 and 388,391.60

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Solution

The fourth proportional to 683,303.60, 1,024,955.40 and 388,391.60 is: 582,587.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    683,303.60 : 1,024,955.40 = 388,391.60 : x
  2. Step 2: Convert to fraction form
    683,303.60/1,024,955.40 = 388,391.60/x
  3. Step 3: Cross multiply
    683,303.60x = 1,024,955.40 × 388,391.60
  4. Step 4: Simplify right side
    683,303.60x = 398,084,067,734.64
  5. Step 5: Solve for x
    x = 398,084,067,734.64/683,303.60
  6. Step 6: Final answer
    x = 582,587.40

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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.