Home / 778,850.60-1,168,275.90-512,911.40

Finding the Fourth Proportional to 778,850.60, 1,168,275.90 and 512,911.40

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Solution

The fourth proportional to 778,850.60, 1,168,275.90 and 512,911.40 is: 769,367.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,850.60 : 1,168,275.90 = 512,911.40 : x
  2. Step 2: Convert to fraction form
    778,850.60/1,168,275.90 = 512,911.40/x
  3. Step 3: Cross multiply
    778,850.60x = 1,168,275.90 × 512,911.40
  4. Step 4: Simplify right side
    778,850.60x = 599,222,027,455.26
  5. Step 5: Solve for x
    x = 599,222,027,455.26/778,850.60
  6. Step 6: Final answer
    x = 769,367.10

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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.