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Finding the Fourth Proportional to 637,508.23, 879,780.71 and 351,038.57

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Solution

The fourth proportional to 637,508.23, 879,780.71 and 351,038.57 is: 484,443.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,508.23 : 879,780.71 = 351,038.57 : x
  2. Step 2: Convert to fraction form
    637,508.23/879,780.71 = 351,038.57/x
  3. Step 3: Cross multiply
    637,508.23x = 879,780.71 × 351,038.57
  4. Step 4: Simplify right side
    637,508.23x = 308,836,962,351.99
  5. Step 5: Solve for x
    x = 308,836,962,351.99/637,508.23
  6. Step 6: Final answer
    x = 484,443.88

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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.