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Finding the Fourth Proportional to 622,901.40, 935,388.90 and 342,619.80

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Solution

The fourth proportional to 622,901.40, 935,388.90 and 342,619.80 is: 514,499.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,901.40 : 935,388.90 = 342,619.80 : x
  2. Step 2: Convert to fraction form
    622,901.40/935,388.90 = 342,619.80/x
  3. Step 3: Cross multiply
    622,901.40x = 935,388.90 × 342,619.80
  4. Step 4: Simplify right side
    622,901.40x = 320,482,757,840.22
  5. Step 5: Solve for x
    x = 320,482,757,840.22/622,901.40
  6. Step 6: Final answer
    x = 514,499.98

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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.