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Finding the Fourth Proportional to 818,655.42, 1,129,716 and 456,060.54

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Solution

The fourth proportional to 818,655.42, 1,129,716 and 456,060.54 is: 629,347.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,655.42 : 1,129,716 = 456,060.54 : x
  2. Step 2: Convert to fraction form
    818,655.42/1,129,716 = 456,060.54/x
  3. Step 3: Cross multiply
    818,655.42x = 1,129,716 × 456,060.54
  4. Step 4: Simplify right side
    818,655.42x = 515,218,889,006.64
  5. Step 5: Solve for x
    x = 515,218,889,006.64/818,655.42
  6. Step 6: Final answer
    x = 629,347.68

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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.