Home / 715,475.52-1,072,885.44-427,419.36

Finding the Fourth Proportional to 715,475.52, 1,072,885.44 and 427,419.36

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Solution

The fourth proportional to 715,475.52, 1,072,885.44 and 427,419.36 is: 640,933.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,475.52 : 1,072,885.44 = 427,419.36 : x
  2. Step 2: Convert to fraction form
    715,475.52/1,072,885.44 = 427,419.36/x
  3. Step 3: Cross multiply
    715,475.52x = 1,072,885.44 × 427,419.36
  4. Step 4: Simplify right side
    715,475.52x = 458,572,008,118.12
  5. Step 5: Solve for x
    x = 458,572,008,118.12/715,475.52
  6. Step 6: Final answer
    x = 640,933.19

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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.