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Finding the Fourth Proportional to 492,503.73, 679,655.10 and 277,643.80

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Solution

The fourth proportional to 492,503.73, 679,655.10 and 277,643.80 is: 383,148.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,503.73 : 679,655.10 = 277,643.80 : x
  2. Step 2: Convert to fraction form
    492,503.73/679,655.10 = 277,643.80/x
  3. Step 3: Cross multiply
    492,503.73x = 679,655.10 × 277,643.80
  4. Step 4: Simplify right side
    492,503.73x = 188,702,024,653.38
  5. Step 5: Solve for x
    x = 188,702,024,653.38/492,503.73
  6. Step 6: Final answer
    x = 383,148.42

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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.