Home / 557,220.44-769,045.50-312,221.77

Finding the Fourth Proportional to 557,220.44, 769,045.50 and 312,221.77

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Solution

The fourth proportional to 557,220.44, 769,045.50 and 312,221.77 is: 430,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,220.44 : 769,045.50 = 312,221.77 : x
  2. Step 2: Convert to fraction form
    557,220.44/769,045.50 = 312,221.77/x
  3. Step 3: Cross multiply
    557,220.44x = 769,045.50 × 312,221.77
  4. Step 4: Simplify right side
    557,220.44x = 240,112,744,517.37
  5. Step 5: Solve for x
    x = 240,112,744,517.37/557,220.44
  6. Step 6: Final answer
    x = 430,911.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.