Home / 1,372,697.80-2,058,086.70-811,443.40

Finding the Fourth Proportional to 1,372,697.80, 2,058,086.70 and 811,443.40

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Solution

The fourth proportional to 1,372,697.80, 2,058,086.70 and 811,443.40 is: 1,216,597.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372,697.80 : 2,058,086.70 = 811,443.40 : x
  2. Step 2: Convert to fraction form
    1,372,697.80/2,058,086.70 = 811,443.40/x
  3. Step 3: Cross multiply
    1,372,697.80x = 2,058,086.70 × 811,443.40
  4. Step 4: Simplify right side
    1,372,697.80x = 1,670,020,869,342.78
  5. Step 5: Solve for x
    x = 1,670,020,869,342.78/1,372,697.80
  6. Step 6: Final answer
    x = 1,216,597.61

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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.