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Finding the Fourth Proportional to 807,900.66, 1,114,889.40 and 440,382.60

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Solution

The fourth proportional to 807,900.66, 1,114,889.40 and 440,382.60 is: 607,720.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,900.66 : 1,114,889.40 = 440,382.60 : x
  2. Step 2: Convert to fraction form
    807,900.66/1,114,889.40 = 440,382.60/x
  3. Step 3: Cross multiply
    807,900.66x = 1,114,889.40 × 440,382.60
  4. Step 4: Simplify right side
    807,900.66x = 490,977,892,684.44
  5. Step 5: Solve for x
    x = 490,977,892,684.44/807,900.66
  6. Step 6: Final answer
    x = 607,720.62

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1.5x scale

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.