Home / 665,273.20-918,110.32-407,069.36

Finding the Fourth Proportional to 665,273.20, 918,110.32 and 407,069.36

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Solution

The fourth proportional to 665,273.20, 918,110.32 and 407,069.36 is: 561,776.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,273.20 : 918,110.32 = 407,069.36 : x
  2. Step 2: Convert to fraction form
    665,273.20/918,110.32 = 407,069.36/x
  3. Step 3: Cross multiply
    665,273.20x = 918,110.32 × 407,069.36
  4. Step 4: Simplify right side
    665,273.20x = 373,734,580,371.80
  5. Step 5: Solve for x
    x = 373,734,580,371.80/665,273.20
  6. Step 6: Final answer
    x = 561,776.09

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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.