Home / 744,399.29-1,116,709.64-345,080.45

Finding the Fourth Proportional to 744,399.29, 1,116,709.64 and 345,080.45

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Solution

The fourth proportional to 744,399.29, 1,116,709.64 and 345,080.45 is: 517,671.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,399.29 : 1,116,709.64 = 345,080.45 : x
  2. Step 2: Convert to fraction form
    744,399.29/1,116,709.64 = 345,080.45/x
  3. Step 3: Cross multiply
    744,399.29x = 1,116,709.64 × 345,080.45
  4. Step 4: Simplify right side
    744,399.29x = 385,354,665,090.54
  5. Step 5: Solve for x
    x = 385,354,665,090.54/744,399.29
  6. Step 6: Final answer
    x = 517,671.99

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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.