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Finding the Fourth Proportional to 636,228.52, 877,978.02 and 349,748.68

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Solution

The fourth proportional to 636,228.52, 877,978.02 and 349,748.68 is: 482,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,228.52 : 877,978.02 = 349,748.68 : x
  2. Step 2: Convert to fraction form
    636,228.52/877,978.02 = 349,748.68/x
  3. Step 3: Cross multiply
    636,228.52x = 877,978.02 × 349,748.68
  4. Step 4: Simplify right side
    636,228.52x = 307,071,653,564.01
  5. Step 5: Solve for x
    x = 307,071,653,564.01/636,228.52
  6. Step 6: Final answer
    x = 482,643.65

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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.