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Finding the Fourth Proportional to 622,321.31, 858,732.41 and 350,382.20

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Solution

The fourth proportional to 622,321.31, 858,732.41 and 350,382.20 is: 483,487.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,321.31 : 858,732.41 = 350,382.20 : x
  2. Step 2: Convert to fraction form
    622,321.31/858,732.41 = 350,382.20/x
  3. Step 3: Cross multiply
    622,321.31x = 858,732.41 × 350,382.20
  4. Step 4: Simplify right side
    622,321.31x = 300,884,547,609.40
  5. Step 5: Solve for x
    x = 300,884,547,609.40/622,321.31
  6. Step 6: Final answer
    x = 483,487.46

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1.5x scale

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.