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Finding the Fourth Proportional to 633,665.56, 874,322.34 and 375,623.80

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Solution

The fourth proportional to 633,665.56, 874,322.34 and 375,623.80 is: 518,280.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,665.56 : 874,322.34 = 375,623.80 : x
  2. Step 2: Convert to fraction form
    633,665.56/874,322.34 = 375,623.80/x
  3. Step 3: Cross multiply
    633,665.56x = 874,322.34 × 375,623.80
  4. Step 4: Simplify right side
    633,665.56x = 328,416,279,775.69
  5. Step 5: Solve for x
    x = 328,416,279,775.69/633,665.56
  6. Step 6: Final answer
    x = 518,280.15

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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.