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Finding the Fourth Proportional to 556,740.56, 768,046.92 and 330,303.44

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Solution

The fourth proportional to 556,740.56, 768,046.92 and 330,303.44 is: 455,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,740.56 : 768,046.92 = 330,303.44 : x
  2. Step 2: Convert to fraction form
    556,740.56/768,046.92 = 330,303.44/x
  3. Step 3: Cross multiply
    556,740.56x = 768,046.92 × 330,303.44
  4. Step 4: Simplify right side
    556,740.56x = 253,688,539,757.41
  5. Step 5: Solve for x
    x = 253,688,539,757.41/556,740.56
  6. Step 6: Final answer
    x = 455,667.43

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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.