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Finding the Fourth Proportional to 637,543.78, 879,810.42 and 351,063.18

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Solution

The fourth proportional to 637,543.78, 879,810.42 and 351,063.18 is: 484,467.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,543.78 : 879,810.42 = 351,063.18 : x
  2. Step 2: Convert to fraction form
    637,543.78/879,810.42 = 351,063.18/x
  3. Step 3: Cross multiply
    637,543.78x = 879,810.42 × 351,063.18
  4. Step 4: Simplify right side
    637,543.78x = 308,869,047,141.63
  5. Step 5: Solve for x
    x = 308,869,047,141.63/637,543.78
  6. Step 6: Final answer
    x = 484,467.19

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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.