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Finding the Fourth Proportional to 768,409.23, 1,060,406.21 and 424,245.83

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Solution

The fourth proportional to 768,409.23, 1,060,406.21 and 424,245.83 is: 585,460.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,409.23 : 1,060,406.21 = 424,245.83 : x
  2. Step 2: Convert to fraction form
    768,409.23/1,060,406.21 = 424,245.83/x
  3. Step 3: Cross multiply
    768,409.23x = 1,060,406.21 × 424,245.83
  4. Step 4: Simplify right side
    768,409.23x = 449,872,910,246.39
  5. Step 5: Solve for x
    x = 449,872,910,246.39/768,409.23
  6. Step 6: Final answer
    x = 585,460.05

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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.