Home / 428,622.27-641,672.14-286,114.07

Finding the Fourth Proportional to 428,622.27, 641,672.14 and 286,114.07

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Solution

The fourth proportional to 428,622.27, 641,672.14 and 286,114.07 is: 428,329.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,622.27 : 641,672.14 = 286,114.07 : x
  2. Step 2: Convert to fraction form
    428,622.27/641,672.14 = 286,114.07/x
  3. Step 3: Cross multiply
    428,622.27x = 641,672.14 × 286,114.07
  4. Step 4: Simplify right side
    428,622.27x = 183,591,423,657.36
  5. Step 5: Solve for x
    x = 183,591,423,657.36/428,622.27
  6. Step 6: Final answer
    x = 428,329.18

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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.