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Finding the Fourth Proportional to 438,327.80, 657,491.70 and 364,516.55

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Solution

The fourth proportional to 438,327.80, 657,491.70 and 364,516.55 is: 546,774.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,327.80 : 657,491.70 = 364,516.55 : x
  2. Step 2: Convert to fraction form
    438,327.80/657,491.70 = 364,516.55/x
  3. Step 3: Cross multiply
    438,327.80x = 657,491.70 × 364,516.55
  4. Step 4: Simplify right side
    438,327.80x = 239,666,606,137.64
  5. Step 5: Solve for x
    x = 239,666,606,137.64/438,327.80
  6. Step 6: Final answer
    x = 546,774.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.