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Finding the Fourth Proportional to 663,438.88, 993,699.64 and 548,281.59

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Solution

The fourth proportional to 663,438.88, 993,699.64 and 548,281.59 is: 821,216.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,438.88 : 993,699.64 = 548,281.59 : x
  2. Step 2: Convert to fraction form
    663,438.88/993,699.64 = 548,281.59/x
  3. Step 3: Cross multiply
    663,438.88x = 993,699.64 × 548,281.59
  4. Step 4: Simplify right side
    663,438.88x = 544,827,210,891.72
  5. Step 5: Solve for x
    x = 544,827,210,891.72/663,438.88
  6. Step 6: Final answer
    x = 821,216.89

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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.