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Finding the Fourth Proportional to 454,927.84, 627,135.84 and 318,532

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Solution

The fourth proportional to 454,927.84, 627,135.84 and 318,532 is: 439,108.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,927.84 : 627,135.84 = 318,532 : x
  2. Step 2: Convert to fraction form
    454,927.84/627,135.84 = 318,532/x
  3. Step 3: Cross multiply
    454,927.84x = 627,135.84 × 318,532
  4. Step 4: Simplify right side
    454,927.84x = 199,762,833,386.88
  5. Step 5: Solve for x
    x = 199,762,833,386.88/454,927.84
  6. Step 6: Final answer
    x = 439,108.83

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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.