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Finding the Fourth Proportional to 637,509.23, 879,782.09 and 351,039.57

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Solution

The fourth proportional to 637,509.23, 879,782.09 and 351,039.57 is: 484,445.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,509.23 : 879,782.09 = 351,039.57 : x
  2. Step 2: Convert to fraction form
    637,509.23/879,782.09 = 351,039.57/x
  3. Step 3: Cross multiply
    637,509.23x = 879,782.09 × 351,039.57
  4. Step 4: Simplify right side
    637,509.23x = 308,838,326,567.30
  5. Step 5: Solve for x
    x = 308,838,326,567.30/637,509.23
  6. Step 6: Final answer
    x = 484,445.26

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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.