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Finding the Fourth Proportional to 665,299.04, 918,111.12 and 363,495.20

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Solution

The fourth proportional to 665,299.04, 918,111.12 and 363,495.20 is: 501,622.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,299.04 : 918,111.12 = 363,495.20 : x
  2. Step 2: Convert to fraction form
    665,299.04/918,111.12 = 363,495.20/x
  3. Step 3: Cross multiply
    665,299.04x = 918,111.12 × 363,495.20
  4. Step 4: Simplify right side
    665,299.04x = 333,728,985,186.62
  5. Step 5: Solve for x
    x = 333,728,985,186.62/665,299.04
  6. Step 6: Final answer
    x = 501,622.53

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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.