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Finding the Fourth Proportional to 619,956.64, 855,539.72 and 348,025.06

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Solution

The fourth proportional to 619,956.64, 855,539.72 and 348,025.06 is: 480,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,956.64 : 855,539.72 = 348,025.06 : x
  2. Step 2: Convert to fraction form
    619,956.64/855,539.72 = 348,025.06/x
  3. Step 3: Cross multiply
    619,956.64x = 855,539.72 × 348,025.06
  4. Step 4: Simplify right side
    619,956.64x = 297,749,258,207.37
  5. Step 5: Solve for x
    x = 297,749,258,207.37/619,956.64
  6. Step 6: Final answer
    x = 480,274.33

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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.