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Finding the Fourth Proportional to 633,878.96, 874,249.08 and 538,700.72

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Solution

The fourth proportional to 633,878.96, 874,249.08 and 538,700.72 is: 742,978.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,878.96 : 874,249.08 = 538,700.72 : x
  2. Step 2: Convert to fraction form
    633,878.96/874,249.08 = 538,700.72/x
  3. Step 3: Cross multiply
    633,878.96x = 874,249.08 × 538,700.72
  4. Step 4: Simplify right side
    633,878.96x = 470,958,608,855.34
  5. Step 5: Solve for x
    x = 470,958,608,855.34/633,878.96
  6. Step 6: Final answer
    x = 742,978.77

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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.