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Finding the Fourth Proportional to 655,408.98, 983,495.61 and 276,306.53

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Solution

The fourth proportional to 655,408.98, 983,495.61 and 276,306.53 is: 414,620.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,408.98 : 983,495.61 = 276,306.53 : x
  2. Step 2: Convert to fraction form
    655,408.98/983,495.61 = 276,306.53/x
  3. Step 3: Cross multiply
    655,408.98x = 983,495.61 × 276,306.53
  4. Step 4: Simplify right side
    655,408.98x = 271,746,254,351.86
  5. Step 5: Solve for x
    x = 271,746,254,351.86/655,408.98
  6. Step 6: Final answer
    x = 414,620.89

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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.