Home / 1,393,052.09-1,922,433.90-781,340.90

Finding the Fourth Proportional to 1,393,052.09, 1,922,433.90 and 781,340.90

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Solution

The fourth proportional to 1,393,052.09, 1,922,433.90 and 781,340.90 is: 1,078,262.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,052.09 : 1,922,433.90 = 781,340.90 : x
  2. Step 2: Convert to fraction form
    1,393,052.09/1,922,433.90 = 781,340.90/x
  3. Step 3: Cross multiply
    1,393,052.09x = 1,922,433.90 × 781,340.90
  4. Step 4: Simplify right side
    1,393,052.09x = 1,502,076,233,616.51
  5. Step 5: Solve for x
    x = 1,502,076,233,616.51/1,393,052.09
  6. Step 6: Final answer
    x = 1,078,262.79

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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.