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Finding the Fourth Proportional to 636,809.58, 954,445.41 and 281,420.46

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Solution

The fourth proportional to 636,809.58, 954,445.41 and 281,420.46 is: 421,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,809.58 : 954,445.41 = 281,420.46 : x
  2. Step 2: Convert to fraction form
    636,809.58/954,445.41 = 281,420.46/x
  3. Step 3: Cross multiply
    636,809.58x = 954,445.41 × 281,420.46
  4. Step 4: Simplify right side
    636,809.58x = 268,600,466,327.09
  5. Step 5: Solve for x
    x = 268,600,466,327.09/636,809.58
  6. Step 6: Final answer
    x = 421,790.87

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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.