Home / 858,109.32-1,184,112.57-509,189.58

Finding the Fourth Proportional to 858,109.32, 1,184,112.57 and 509,189.58

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Solution

The fourth proportional to 858,109.32, 1,184,112.57 and 509,189.58 is: 702,635.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,109.32 : 1,184,112.57 = 509,189.58 : x
  2. Step 2: Convert to fraction form
    858,109.32/1,184,112.57 = 509,189.58/x
  3. Step 3: Cross multiply
    858,109.32x = 1,184,112.57 × 509,189.58
  4. Step 4: Simplify right side
    858,109.32x = 602,937,782,435.32
  5. Step 5: Solve for x
    x = 602,937,782,435.32/858,109.32
  6. Step 6: Final answer
    x = 702,635.17

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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.