Home / 730,463.09-1,008,139.19-420,359.31

Finding the Fourth Proportional to 730,463.09, 1,008,139.19 and 420,359.31

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Solution

The fourth proportional to 730,463.09, 1,008,139.19 and 420,359.31 is: 580,153.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,463.09 : 1,008,139.19 = 420,359.31 : x
  2. Step 2: Convert to fraction form
    730,463.09/1,008,139.19 = 420,359.31/x
  3. Step 3: Cross multiply
    730,463.09x = 1,008,139.19 × 420,359.31
  4. Step 4: Simplify right side
    730,463.09x = 423,780,692,190.56
  5. Step 5: Solve for x
    x = 423,780,692,190.56/730,463.09
  6. Step 6: Final answer
    x = 580,153.47

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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.