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Finding the Fourth Proportional to 655,860.67, 905,064.10 and 369,407.41

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Solution

The fourth proportional to 655,860.67, 905,064.10 and 369,407.41 is: 509,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,860.67 : 905,064.10 = 369,407.41 : x
  2. Step 2: Convert to fraction form
    655,860.67/905,064.10 = 369,407.41/x
  3. Step 3: Cross multiply
    655,860.67x = 905,064.10 × 369,407.41
  4. Step 4: Simplify right side
    655,860.67x = 334,337,385,064.98
  5. Step 5: Solve for x
    x = 334,337,385,064.98/655,860.67
  6. Step 6: Final answer
    x = 509,768.92

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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.