Home / 1,238,190.20-1,708,803.24-728,991.80

Finding the Fourth Proportional to 1,238,190.20, 1,708,803.24 and 728,991.80

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Solution

The fourth proportional to 1,238,190.20, 1,708,803.24 and 728,991.80 is: 1,006,068.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,190.20 : 1,708,803.24 = 728,991.80 : x
  2. Step 2: Convert to fraction form
    1,238,190.20/1,708,803.24 = 728,991.80/x
  3. Step 3: Cross multiply
    1,238,190.20x = 1,708,803.24 × 728,991.80
  4. Step 4: Simplify right side
    1,238,190.20x = 1,245,703,549,773.43
  5. Step 5: Solve for x
    x = 1,245,703,549,773.43/1,238,190.20
  6. Step 6: Final answer
    x = 1,006,068.01

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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.