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Finding the Fourth Proportional to 475,259.40, 713,021.22 and 386,292.60

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Solution

The fourth proportional to 475,259.40, 713,021.22 and 386,292.60 is: 579,546.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,259.40 : 713,021.22 = 386,292.60 : x
  2. Step 2: Convert to fraction form
    475,259.40/713,021.22 = 386,292.60/x
  3. Step 3: Cross multiply
    475,259.40x = 713,021.22 × 386,292.60
  4. Step 4: Simplify right side
    475,259.40x = 275,434,820,928.97
  5. Step 5: Solve for x
    x = 275,434,820,928.97/475,259.40
  6. Step 6: Final answer
    x = 579,546.29

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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.