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Finding the Fourth Proportional to 655,415.48, 983,505.36 and 276,312.98

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Solution

The fourth proportional to 655,415.48, 983,505.36 and 276,312.98 is: 414,630.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,415.48 : 983,505.36 = 276,312.98 : x
  2. Step 2: Convert to fraction form
    655,415.48/983,505.36 = 276,312.98/x
  3. Step 3: Cross multiply
    655,415.48x = 983,505.36 × 276,312.98
  4. Step 4: Simplify right side
    655,415.48x = 271,755,296,867.57
  5. Step 5: Solve for x
    x = 271,755,296,867.57/655,415.48
  6. Step 6: Final answer
    x = 414,630.57

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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.