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Finding the Fourth Proportional to 507,634.89, 761,454.14 and 128,555.52

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Solution

The fourth proportional to 507,634.89, 761,454.14 and 128,555.52 is: 192,833.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,634.89 : 761,454.14 = 128,555.52 : x
  2. Step 2: Convert to fraction form
    507,634.89/761,454.14 = 128,555.52/x
  3. Step 3: Cross multiply
    507,634.89x = 761,454.14 × 128,555.52
  4. Step 4: Simplify right side
    507,634.89x = 97,889,132,923.85
  5. Step 5: Solve for x
    x = 97,889,132,923.85/507,634.89
  6. Step 6: Final answer
    x = 192,833.74

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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.