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Finding the Fourth Proportional to 655,910.12, 905,211.06 and 369,486.44

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Solution

The fourth proportional to 655,910.12, 905,211.06 and 369,486.44 is: 509,922.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,910.12 : 905,211.06 = 369,486.44 : x
  2. Step 2: Convert to fraction form
    655,910.12/905,211.06 = 369,486.44/x
  3. Step 3: Cross multiply
    655,910.12x = 905,211.06 × 369,486.44
  4. Step 4: Simplify right side
    655,910.12x = 334,463,212,008.03
  5. Step 5: Solve for x
    x = 334,463,212,008.03/655,910.12
  6. Step 6: Final answer
    x = 509,922.32

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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.