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Finding the Fourth Proportional to 872,181.36, 1,203,710 and 485,035.36

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Solution

The fourth proportional to 872,181.36, 1,203,710 and 485,035.36 is: 669,404.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,181.36 : 1,203,710 = 485,035.36 : x
  2. Step 2: Convert to fraction form
    872,181.36/1,203,710 = 485,035.36/x
  3. Step 3: Cross multiply
    872,181.36x = 1,203,710 × 485,035.36
  4. Step 4: Simplify right side
    872,181.36x = 583,841,913,185.60
  5. Step 5: Solve for x
    x = 583,841,913,185.60/872,181.36
  6. Step 6: Final answer
    x = 669,404.25

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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.