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Finding the Fourth Proportional to 651,209.63, 898,672.05 and 379,463.94

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Solution

The fourth proportional to 651,209.63, 898,672.05 and 379,463.94 is: 523,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,209.63 : 898,672.05 = 379,463.94 : x
  2. Step 2: Convert to fraction form
    651,209.63/898,672.05 = 379,463.94/x
  3. Step 3: Cross multiply
    651,209.63x = 898,672.05 × 379,463.94
  4. Step 4: Simplify right side
    651,209.63x = 341,013,636,860.88
  5. Step 5: Solve for x
    x = 341,013,636,860.88/651,209.63
  6. Step 6: Final answer
    x = 523,661.85

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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.