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Finding the Fourth Proportional to 636,256.68, 878,050.98 and 349,783.98

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Solution

The fourth proportional to 636,256.68, 878,050.98 and 349,783.98 is: 482,711.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,256.68 : 878,050.98 = 349,783.98 : x
  2. Step 2: Convert to fraction form
    636,256.68/878,050.98 = 349,783.98/x
  3. Step 3: Cross multiply
    636,256.68x = 878,050.98 × 349,783.98
  4. Step 4: Simplify right side
    636,256.68x = 307,128,166,427.30
  5. Step 5: Solve for x
    x = 307,128,166,427.30/636,256.68
  6. Step 6: Final answer
    x = 482,711.11

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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.