Home / 669,066.38-923,314.40-363,143.20

Finding the Fourth Proportional to 669,066.38, 923,314.40 and 363,143.20

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Solution

The fourth proportional to 669,066.38, 923,314.40 and 363,143.20 is: 501,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,066.38 : 923,314.40 = 363,143.20 : x
  2. Step 2: Convert to fraction form
    669,066.38/923,314.40 = 363,143.20/x
  3. Step 3: Cross multiply
    669,066.38x = 923,314.40 × 363,143.20
  4. Step 4: Simplify right side
    669,066.38x = 335,295,345,822.08
  5. Step 5: Solve for x
    x = 335,295,345,822.08/669,066.38
  6. Step 6: Final answer
    x = 501,139.13

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Half scale
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Double scale
Find fourth proportional to 669,067.38, 923,315.78 and 363,144.20
Similar ratio
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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.