Home / 725,743.79-1,001,650.19-420,006.32

Finding the Fourth Proportional to 725,743.79, 1,001,650.19 and 420,006.32

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Solution

The fourth proportional to 725,743.79, 1,001,650.19 and 420,006.32 is: 579,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,743.79 : 1,001,650.19 = 420,006.32 : x
  2. Step 2: Convert to fraction form
    725,743.79/1,001,650.19 = 420,006.32/x
  3. Step 3: Cross multiply
    725,743.79x = 1,001,650.19 × 420,006.32
  4. Step 4: Simplify right side
    725,743.79x = 420,699,403,120.92
  5. Step 5: Solve for x
    x = 420,699,403,120.92/725,743.79
  6. Step 6: Final answer
    x = 579,680.34

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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.