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Finding the Fourth Proportional to 633,872.96, 874,240.80 and 538,694.72

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Solution

The fourth proportional to 633,872.96, 874,240.80 and 538,694.72 is: 742,970.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,872.96 : 874,240.80 = 538,694.72 : x
  2. Step 2: Convert to fraction form
    633,872.96/874,240.80 = 538,694.72/x
  3. Step 3: Cross multiply
    633,872.96x = 874,240.80 × 538,694.72
  4. Step 4: Simplify right side
    633,872.96x = 470,948,902,968.58
  5. Step 5: Solve for x
    x = 470,948,902,968.58/633,872.96
  6. Step 6: Final answer
    x = 742,970.49

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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.