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Finding the Fourth Proportional to 636,203.37, 877,938.36 and 349,721.40

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Solution

The fourth proportional to 636,203.37, 877,938.36 and 349,721.40 is: 482,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,203.37 : 877,938.36 = 349,721.40 : x
  2. Step 2: Convert to fraction form
    636,203.37/877,938.36 = 349,721.40/x
  3. Step 3: Cross multiply
    636,203.37x = 877,938.36 × 349,721.40
  4. Step 4: Simplify right side
    636,203.37x = 307,033,827,983.21
  5. Step 5: Solve for x
    x = 307,033,827,983.21/636,203.37
  6. Step 6: Final answer
    x = 482,603.28

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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.