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Finding the Fourth Proportional to 636,953.63, 955,311.74 and 204,678.58

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Solution

The fourth proportional to 636,953.63, 955,311.74 and 204,678.58 is: 306,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,953.63 : 955,311.74 = 204,678.58 : x
  2. Step 2: Convert to fraction form
    636,953.63/955,311.74 = 204,678.58/x
  3. Step 3: Cross multiply
    636,953.63x = 955,311.74 × 204,678.58
  4. Step 4: Simplify right side
    636,953.63x = 195,531,849,547.61
  5. Step 5: Solve for x
    x = 195,531,849,547.61/636,953.63
  6. Step 6: Final answer
    x = 306,979.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.