Home / 459,085.33-631,986.73-378,385.03

Finding the Fourth Proportional to 459,085.33, 631,986.73 and 378,385.03

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Solution

The fourth proportional to 459,085.33, 631,986.73 and 378,385.03 is: 520,892.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,085.33 : 631,986.73 = 378,385.03 : x
  2. Step 2: Convert to fraction form
    459,085.33/631,986.73 = 378,385.03/x
  3. Step 3: Cross multiply
    459,085.33x = 631,986.73 × 378,385.03
  4. Step 4: Simplify right side
    459,085.33x = 239,134,317,790.65
  5. Step 5: Solve for x
    x = 239,134,317,790.65/459,085.33
  6. Step 6: Final answer
    x = 520,892.96

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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.