Home / 456,742.48-685,897.80-280,285.60

Finding the Fourth Proportional to 456,742.48, 685,897.80 and 280,285.60

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Solution

The fourth proportional to 456,742.48, 685,897.80 and 280,285.60 is: 420,909.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,742.48 : 685,897.80 = 280,285.60 : x
  2. Step 2: Convert to fraction form
    456,742.48/685,897.80 = 280,285.60/x
  3. Step 3: Cross multiply
    456,742.48x = 685,897.80 × 280,285.60
  4. Step 4: Simplify right side
    456,742.48x = 192,247,276,411.68
  5. Step 5: Solve for x
    x = 192,247,276,411.68/456,742.48
  6. Step 6: Final answer
    x = 420,909.56

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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.