Home / 665,119.12-917,851.24-374,731.28

Finding the Fourth Proportional to 665,119.12, 917,851.24 and 374,731.28

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Solution

The fourth proportional to 665,119.12, 917,851.24 and 374,731.28 is: 517,121.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,119.12 : 917,851.24 = 374,731.28 : x
  2. Step 2: Convert to fraction form
    665,119.12/917,851.24 = 374,731.28/x
  3. Step 3: Cross multiply
    665,119.12x = 917,851.24 × 374,731.28
  4. Step 4: Simplify right side
    665,119.12x = 343,947,570,014.79
  5. Step 5: Solve for x
    x = 343,947,570,014.79/665,119.12
  6. Step 6: Final answer
    x = 517,121.76

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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.