Home / 665,158.23-997,985.21-399,109.68

Finding the Fourth Proportional to 665,158.23, 997,985.21 and 399,109.68

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Solution

The fourth proportional to 665,158.23, 997,985.21 and 399,109.68 is: 598,813.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,158.23 : 997,985.21 = 399,109.68 : x
  2. Step 2: Convert to fraction form
    665,158.23/997,985.21 = 399,109.68/x
  3. Step 3: Cross multiply
    665,158.23x = 997,985.21 × 399,109.68
  4. Step 4: Simplify right side
    665,158.23x = 398,305,555,812.28
  5. Step 5: Solve for x
    x = 398,305,555,812.28/665,158.23
  6. Step 6: Final answer
    x = 598,813.24

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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.