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Finding the Fourth Proportional to 876,408.10, 1,314,687.42 and 307,740.32

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Solution

The fourth proportional to 876,408.10, 1,314,687.42 and 307,740.32 is: 461,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,408.10 : 1,314,687.42 = 307,740.32 : x
  2. Step 2: Convert to fraction form
    876,408.10/1,314,687.42 = 307,740.32/x
  3. Step 3: Cross multiply
    876,408.10x = 1,314,687.42 × 307,740.32
  4. Step 4: Simplify right side
    876,408.10x = 404,582,327,330.77
  5. Step 5: Solve for x
    x = 404,582,327,330.77/876,408.10
  6. Step 6: Final answer
    x = 461,636.91

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1.5x scale

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.