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Finding the Fourth Proportional to 636,206.42, 877,942.55 and 349,724.45

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Solution

The fourth proportional to 636,206.42, 877,942.55 and 349,724.45 is: 482,607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,206.42 : 877,942.55 = 349,724.45 : x
  2. Step 2: Convert to fraction form
    636,206.42/877,942.55 = 349,724.45/x
  3. Step 3: Cross multiply
    636,206.42x = 877,942.55 × 349,724.45
  4. Step 4: Simplify right side
    636,206.42x = 307,037,973,681.73
  5. Step 5: Solve for x
    x = 307,037,973,681.73/636,206.42
  6. Step 6: Final answer
    x = 482,607.47

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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.