Home / 645,105.41-890,361.83-373,135.49

Finding the Fourth Proportional to 645,105.41, 890,361.83 and 373,135.49

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Solution

The fourth proportional to 645,105.41, 890,361.83 and 373,135.49 is: 514,994.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,105.41 : 890,361.83 = 373,135.49 : x
  2. Step 2: Convert to fraction form
    645,105.41/890,361.83 = 373,135.49/x
  3. Step 3: Cross multiply
    645,105.41x = 890,361.83 × 373,135.49
  4. Step 4: Simplify right side
    645,105.41x = 332,225,595,848.67
  5. Step 5: Solve for x
    x = 332,225,595,848.67/645,105.41
  6. Step 6: Final answer
    x = 514,994.28

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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.