Home / 645,247.79-890,436.54-358,765.37

Finding the Fourth Proportional to 645,247.79, 890,436.54 and 358,765.37

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Solution

The fourth proportional to 645,247.79, 890,436.54 and 358,765.37 is: 495,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,247.79 : 890,436.54 = 358,765.37 : x
  2. Step 2: Convert to fraction form
    645,247.79/890,436.54 = 358,765.37/x
  3. Step 3: Cross multiply
    645,247.79x = 890,436.54 × 358,765.37
  4. Step 4: Simplify right side
    645,247.79x = 319,457,790,282.44
  5. Step 5: Solve for x
    x = 319,457,790,282.44/645,247.79
  6. Step 6: Final answer
    x = 495,093.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.