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Finding the Fourth Proportional to 551,474.58, 761,018.32 and 306,458.52

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Solution

The fourth proportional to 551,474.58, 761,018.32 and 306,458.52 is: 422,903.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,474.58 : 761,018.32 = 306,458.52 : x
  2. Step 2: Convert to fraction form
    551,474.58/761,018.32 = 306,458.52/x
  3. Step 3: Cross multiply
    551,474.58x = 761,018.32 × 306,458.52
  4. Step 4: Simplify right side
    551,474.58x = 233,220,548,040.09
  5. Step 5: Solve for x
    x = 233,220,548,040.09/551,474.58
  6. Step 6: Final answer
    x = 422,903.53

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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.