Home / 823,017.78-1,135,756.17-455,495.63

Finding the Fourth Proportional to 823,017.78, 1,135,756.17 and 455,495.63

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Solution

The fourth proportional to 823,017.78, 1,135,756.17 and 455,495.63 is: 628,579.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,017.78 : 1,135,756.17 = 455,495.63 : x
  2. Step 2: Convert to fraction form
    823,017.78/1,135,756.17 = 455,495.63/x
  3. Step 3: Cross multiply
    823,017.78x = 1,135,756.17 × 455,495.63
  4. Step 4: Simplify right side
    823,017.78x = 517,331,975,101.05
  5. Step 5: Solve for x
    x = 517,331,975,101.05/823,017.78
  6. Step 6: Final answer
    x = 628,579.34

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.