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Finding the Fourth Proportional to 636,225.44, 877,990.80 and 349,764

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Solution

The fourth proportional to 636,225.44, 877,990.80 and 349,764 is: 482,674.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,225.44 : 877,990.80 = 349,764 : x
  2. Step 2: Convert to fraction form
    636,225.44/877,990.80 = 349,764/x
  3. Step 3: Cross multiply
    636,225.44x = 877,990.80 × 349,764
  4. Step 4: Simplify right side
    636,225.44x = 307,089,574,171.20
  5. Step 5: Solve for x
    x = 307,089,574,171.20/636,225.44
  6. Step 6: Final answer
    x = 482,674.15

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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.