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Finding the Fourth Proportional to 548,837.76, 757,416.96 and 319,376.64

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Solution

The fourth proportional to 548,837.76, 757,416.96 and 319,376.64 is: 440,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,837.76 : 757,416.96 = 319,376.64 : x
  2. Step 2: Convert to fraction form
    548,837.76/757,416.96 = 319,376.64/x
  3. Step 3: Cross multiply
    548,837.76x = 757,416.96 × 319,376.64
  4. Step 4: Simplify right side
    548,837.76x = 241,901,283,763.81
  5. Step 5: Solve for x
    x = 241,901,283,763.81/548,837.76
  6. Step 6: Final answer
    x = 440,751.90

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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.