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Finding the Fourth Proportional to 807,416.32, 1,114,181.04 and 485,140

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Solution

The fourth proportional to 807,416.32, 1,114,181.04 and 485,140 is: 669,461.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,416.32 : 1,114,181.04 = 485,140 : x
  2. Step 2: Convert to fraction form
    807,416.32/1,114,181.04 = 485,140/x
  3. Step 3: Cross multiply
    807,416.32x = 1,114,181.04 × 485,140
  4. Step 4: Simplify right side
    807,416.32x = 540,533,789,745.60
  5. Step 5: Solve for x
    x = 540,533,789,745.60/807,416.32
  6. Step 6: Final answer
    x = 669,461.07

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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.