Home / 858,131.11-1,184,142.61-509,211.38

Finding the Fourth Proportional to 858,131.11, 1,184,142.61 and 509,211.38

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Solution

The fourth proportional to 858,131.11, 1,184,142.61 and 509,211.38 is: 702,665.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,131.11 : 1,184,142.61 = 509,211.38 : x
  2. Step 2: Convert to fraction form
    858,131.11/1,184,142.61 = 509,211.38/x
  3. Step 3: Cross multiply
    858,131.11x = 1,184,142.61 × 509,211.38
  4. Step 4: Simplify right side
    858,131.11x = 602,978,895,560.70
  5. Step 5: Solve for x
    x = 602,978,895,560.70/858,131.11
  6. Step 6: Final answer
    x = 702,665.23

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Double scale
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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.