Home / 818,720.42-1,227,487.71-345,145.82

Finding the Fourth Proportional to 818,720.42, 1,227,487.71 and 345,145.82

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Solution

The fourth proportional to 818,720.42, 1,227,487.71 and 345,145.82 is: 517,468.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,720.42 : 1,227,487.71 = 345,145.82 : x
  2. Step 2: Convert to fraction form
    818,720.42/1,227,487.71 = 345,145.82/x
  3. Step 3: Cross multiply
    818,720.42x = 1,227,487.71 × 345,145.82
  4. Step 4: Simplify right side
    818,720.42x = 423,662,252,207.87
  5. Step 5: Solve for x
    x = 423,662,252,207.87/818,720.42
  6. Step 6: Final answer
    x = 517,468.77

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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.