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Finding the Fourth Proportional to 627,376.84, 865,682.58 and 372,721.48

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Solution

The fourth proportional to 627,376.84, 865,682.58 and 372,721.48 is: 514,297.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,376.84 : 865,682.58 = 372,721.48 : x
  2. Step 2: Convert to fraction form
    627,376.84/865,682.58 = 372,721.48/x
  3. Step 3: Cross multiply
    627,376.84x = 865,682.58 × 372,721.48
  4. Step 4: Simplify right side
    627,376.84x = 322,658,492,427.82
  5. Step 5: Solve for x
    x = 322,658,492,427.82/627,376.84
  6. Step 6: Final answer
    x = 514,297.74

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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.