Home / 858,883.70-1,288,325.55-540,019.10

Finding the Fourth Proportional to 858,883.70, 1,288,325.55 and 540,019.10

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Solution

The fourth proportional to 858,883.70, 1,288,325.55 and 540,019.10 is: 810,028.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,883.70 : 1,288,325.55 = 540,019.10 : x
  2. Step 2: Convert to fraction form
    858,883.70/1,288,325.55 = 540,019.10/x
  3. Step 3: Cross multiply
    858,883.70x = 1,288,325.55 × 540,019.10
  4. Step 4: Simplify right side
    858,883.70x = 695,720,404,018.01
  5. Step 5: Solve for x
    x = 695,720,404,018.01/858,883.70
  6. Step 6: Final answer
    x = 810,028.65

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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.