Home / 420,733.38-631,329.69-243,586.38

Finding the Fourth Proportional to 420,733.38, 631,329.69 and 243,586.38

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Solution

The fourth proportional to 420,733.38, 631,329.69 and 243,586.38 is: 365,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,733.38 : 631,329.69 = 243,586.38 : x
  2. Step 2: Convert to fraction form
    420,733.38/631,329.69 = 243,586.38/x
  3. Step 3: Cross multiply
    420,733.38x = 631,329.69 × 243,586.38
  4. Step 4: Simplify right side
    420,733.38x = 153,783,313,773.62
  5. Step 5: Solve for x
    x = 153,783,313,773.62/420,733.38
  6. Step 6: Final answer
    x = 365,512.51

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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.