Home / 769,333.20-1,153,999.64-320,045.52

Finding the Fourth Proportional to 769,333.20, 1,153,999.64 and 320,045.52

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Solution

The fourth proportional to 769,333.20, 1,153,999.64 and 320,045.52 is: 480,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,333.20 : 1,153,999.64 = 320,045.52 : x
  2. Step 2: Convert to fraction form
    769,333.20/1,153,999.64 = 320,045.52/x
  3. Step 3: Cross multiply
    769,333.20x = 1,153,999.64 × 320,045.52
  4. Step 4: Simplify right side
    769,333.20x = 369,332,414,863.61
  5. Step 5: Solve for x
    x = 369,332,414,863.61/769,333.20
  6. Step 6: Final answer
    x = 480,068.21

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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.