Home / 665,790.17-918,846.41-407,665.85

Finding the Fourth Proportional to 665,790.17, 918,846.41 and 407,665.85

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Solution

The fourth proportional to 665,790.17, 918,846.41 and 407,665.85 is: 562,613.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,790.17 : 918,846.41 = 407,665.85 : x
  2. Step 2: Convert to fraction form
    665,790.17/918,846.41 = 407,665.85/x
  3. Step 3: Cross multiply
    665,790.17x = 918,846.41 × 407,665.85
  4. Step 4: Simplify right side
    665,790.17x = 374,582,296,119.54
  5. Step 5: Solve for x
    x = 374,582,296,119.54/665,790.17
  6. Step 6: Final answer
    x = 562,613.14

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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.