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Finding the Fourth Proportional to 636,988.91, 879,081.07 and 365,102.10

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Solution

The fourth proportional to 636,988.91, 879,081.07 and 365,102.10 is: 503,861.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,988.91 : 879,081.07 = 365,102.10 : x
  2. Step 2: Convert to fraction form
    636,988.91/879,081.07 = 365,102.10/x
  3. Step 3: Cross multiply
    636,988.91x = 879,081.07 × 365,102.10
  4. Step 4: Simplify right side
    636,988.91x = 320,954,343,442.30
  5. Step 5: Solve for x
    x = 320,954,343,442.30/636,988.91
  6. Step 6: Final answer
    x = 503,861.74

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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.