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Finding the Fourth Proportional to 622,379.40, 931,418.70 and 373,240.20

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Solution

The fourth proportional to 622,379.40, 931,418.70 and 373,240.20 is: 558,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,379.40 : 931,418.70 = 373,240.20 : x
  2. Step 2: Convert to fraction form
    622,379.40/931,418.70 = 373,240.20/x
  3. Step 3: Cross multiply
    622,379.40x = 931,418.70 × 373,240.20
  4. Step 4: Simplify right side
    622,379.40x = 347,642,901,871.74
  5. Step 5: Solve for x
    x = 347,642,901,871.74/622,379.40
  6. Step 6: Final answer
    x = 558,570.71

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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.