Home / 853,556.04-1,280,678.31-379,917.45

Finding the Fourth Proportional to 853,556.04, 1,280,678.31 and 379,917.45

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Solution

The fourth proportional to 853,556.04, 1,280,678.31 and 379,917.45 is: 570,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,556.04 : 1,280,678.31 = 379,917.45 : x
  2. Step 2: Convert to fraction form
    853,556.04/1,280,678.31 = 379,917.45/x
  3. Step 3: Cross multiply
    853,556.04x = 1,280,678.31 × 379,917.45
  4. Step 4: Simplify right side
    853,556.04x = 486,552,037,805.51
  5. Step 5: Solve for x
    x = 486,552,037,805.51/853,556.04
  6. Step 6: Final answer
    x = 570,029.40

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Double scale
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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.