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Finding the Fourth Proportional to 655,876.86, 905,113.08 and 369,401.73

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Solution

The fourth proportional to 655,876.86, 905,113.08 and 369,401.73 is: 509,776.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,876.86 : 905,113.08 = 369,401.73 : x
  2. Step 2: Convert to fraction form
    655,876.86/905,113.08 = 369,401.73/x
  3. Step 3: Cross multiply
    655,876.86x = 905,113.08 × 369,401.73
  4. Step 4: Simplify right side
    655,876.86x = 334,350,337,597.63
  5. Step 5: Solve for x
    x = 334,350,337,597.63/655,876.86
  6. Step 6: Final answer
    x = 509,776.08

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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.