Home / 543,828.30-815,742.45-403,860.30

Finding the Fourth Proportional to 543,828.30, 815,742.45 and 403,860.30

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Solution

The fourth proportional to 543,828.30, 815,742.45 and 403,860.30 is: 605,790.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,828.30 : 815,742.45 = 403,860.30 : x
  2. Step 2: Convert to fraction form
    543,828.30/815,742.45 = 403,860.30/x
  3. Step 3: Cross multiply
    543,828.30x = 815,742.45 × 403,860.30
  4. Step 4: Simplify right side
    543,828.30x = 329,445,990,579.74
  5. Step 5: Solve for x
    x = 329,445,990,579.74/543,828.30
  6. Step 6: Final answer
    x = 605,790.45

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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.