Home / 1,372,728.80-2,058,133.20-811,474.40

Finding the Fourth Proportional to 1,372,728.80, 2,058,133.20 and 811,474.40

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Solution

The fourth proportional to 1,372,728.80, 2,058,133.20 and 811,474.40 is: 1,216,644.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,728.80 : 2,058,133.20 = 811,474.40 : x
  2. Step 2: Convert to fraction form
    1,372,728.80/2,058,133.20 = 811,474.40/x
  3. Step 3: Cross multiply
    1,372,728.80x = 2,058,133.20 × 811,474.40
  4. Step 4: Simplify right side
    1,372,728.80x = 1,670,122,403,590.08
  5. Step 5: Solve for x
    x = 1,670,122,403,590.08/1,372,728.80
  6. Step 6: Final answer
    x = 1,216,644.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.