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Finding the Fourth Proportional to 636,291.91, 877,991.40 and 374,491.54

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Solution

The fourth proportional to 636,291.91, 877,991.40 and 374,491.54 is: 516,744.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,291.91 : 877,991.40 = 374,491.54 : x
  2. Step 2: Convert to fraction form
    636,291.91/877,991.40 = 374,491.54/x
  3. Step 3: Cross multiply
    636,291.91x = 877,991.40 × 374,491.54
  4. Step 4: Simplify right side
    636,291.91x = 328,800,351,492.76
  5. Step 5: Solve for x
    x = 328,800,351,492.76/636,291.91
  6. Step 6: Final answer
    x = 516,744.51

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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.