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Finding the Fourth Proportional to 636,284.68, 878,050.45 and 349,802.66

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Solution

The fourth proportional to 636,284.68, 878,050.45 and 349,802.66 is: 482,715.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,284.68 : 878,050.45 = 349,802.66 : x
  2. Step 2: Convert to fraction form
    636,284.68/878,050.45 = 349,802.66/x
  3. Step 3: Cross multiply
    636,284.68x = 878,050.45 × 349,802.66
  4. Step 4: Simplify right side
    636,284.68x = 307,144,383,024.20
  5. Step 5: Solve for x
    x = 307,144,383,024.20/636,284.68
  6. Step 6: Final answer
    x = 482,715.35

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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.