Home / 819,107.61-1,229,214.99-286,633.25

Finding the Fourth Proportional to 819,107.61, 1,229,214.99 and 286,633.25

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Solution

The fourth proportional to 819,107.61, 1,229,214.99 and 286,633.25 is: 430,143.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,107.61 : 1,229,214.99 = 286,633.25 : x
  2. Step 2: Convert to fraction form
    819,107.61/1,229,214.99 = 286,633.25/x
  3. Step 3: Cross multiply
    819,107.61x = 1,229,214.99 × 286,633.25
  4. Step 4: Simplify right side
    819,107.61x = 352,333,887,070.77
  5. Step 5: Solve for x
    x = 352,333,887,070.77/819,107.61
  6. Step 6: Final answer
    x = 430,143.59

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Half scale
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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.