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Finding the Fourth Proportional to 636,186.50, 877,939.20 and 364,258.58

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Solution

The fourth proportional to 636,186.50, 877,939.20 and 364,258.58 is: 502,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,186.50 : 877,939.20 = 364,258.58 : x
  2. Step 2: Convert to fraction form
    636,186.50/877,939.20 = 364,258.58/x
  3. Step 3: Cross multiply
    636,186.50x = 877,939.20 × 364,258.58
  4. Step 4: Simplify right side
    636,186.50x = 319,796,886,318.34
  5. Step 5: Solve for x
    x = 319,796,886,318.34/636,186.50
  6. Step 6: Final answer
    x = 502,677.89

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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.