Home / 545,769.20-819,139.80-320,848.40

Finding the Fourth Proportional to 545,769.20, 819,139.80 and 320,848.40

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Solution

The fourth proportional to 545,769.20, 819,139.80 and 320,848.40 is: 481,558.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,769.20 : 819,139.80 = 320,848.40 : x
  2. Step 2: Convert to fraction form
    545,769.20/819,139.80 = 320,848.40/x
  3. Step 3: Cross multiply
    545,769.20x = 819,139.80 × 320,848.40
  4. Step 4: Simplify right side
    545,769.20x = 262,819,694,206.32
  5. Step 5: Solve for x
    x = 262,819,694,206.32/545,769.20
  6. Step 6: Final answer
    x = 481,558.31

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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.