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Finding the Fourth Proportional to 556,909.44, 767,954.14 and 330,511.20

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Solution

The fourth proportional to 556,909.44, 767,954.14 and 330,511.20 is: 455,760.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,909.44 : 767,954.14 = 330,511.20 : x
  2. Step 2: Convert to fraction form
    556,909.44/767,954.14 = 330,511.20/x
  3. Step 3: Cross multiply
    556,909.44x = 767,954.14 × 330,511.20
  4. Step 4: Simplify right side
    556,909.44x = 253,817,444,356.37
  5. Step 5: Solve for x
    x = 253,817,444,356.37/556,909.44
  6. Step 6: Final answer
    x = 455,760.71

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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.