Home / 1,115,128.35-1,672,687.05-316,411.34

Finding the Fourth Proportional to 1,115,128.35, 1,672,687.05 and 316,411.34

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Solution

The fourth proportional to 1,115,128.35, 1,672,687.05 and 316,411.34 is: 474,615.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,128.35 : 1,672,687.05 = 316,411.34 : x
  2. Step 2: Convert to fraction form
    1,115,128.35/1,672,687.05 = 316,411.34/x
  3. Step 3: Cross multiply
    1,115,128.35x = 1,672,687.05 × 316,411.34
  4. Step 4: Simplify right side
    1,115,128.35x = 529,257,150,891.15
  5. Step 5: Solve for x
    x = 529,257,150,891.15/1,115,128.35
  6. Step 6: Final answer
    x = 474,615.46

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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.