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Finding the Fourth Proportional to 642,370.49, 886,447.76 and 370,449.84

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Solution

The fourth proportional to 642,370.49, 886,447.76 and 370,449.84 is: 511,207.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,370.49 : 886,447.76 = 370,449.84 : x
  2. Step 2: Convert to fraction form
    642,370.49/886,447.76 = 370,449.84/x
  3. Step 3: Cross multiply
    642,370.49x = 886,447.76 × 370,449.84
  4. Step 4: Simplify right side
    642,370.49x = 328,384,430,860.36
  5. Step 5: Solve for x
    x = 328,384,430,860.36/642,370.49
  6. Step 6: Final answer
    x = 511,207.22

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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.