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Finding the Fourth Proportional to 556,579.89, 768,081.72 and 301,931.07

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Solution

The fourth proportional to 556,579.89, 768,081.72 and 301,931.07 is: 416,665.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,579.89 : 768,081.72 = 301,931.07 : x
  2. Step 2: Convert to fraction form
    556,579.89/768,081.72 = 301,931.07/x
  3. Step 3: Cross multiply
    556,579.89x = 768,081.72 × 301,931.07
  4. Step 4: Simplify right side
    556,579.89x = 231,907,738,447.35
  5. Step 5: Solve for x
    x = 231,907,738,447.35/556,579.89
  6. Step 6: Final answer
    x = 416,665.68

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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.