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Finding the Fourth Proportional to 674,290.88, 930,548.15 and 387,810.62

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Solution

The fourth proportional to 674,290.88, 930,548.15 and 387,810.62 is: 535,194.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,290.88 : 930,548.15 = 387,810.62 : x
  2. Step 2: Convert to fraction form
    674,290.88/930,548.15 = 387,810.62/x
  3. Step 3: Cross multiply
    674,290.88x = 930,548.15 × 387,810.62
  4. Step 4: Simplify right side
    674,290.88x = 360,876,448,399.56
  5. Step 5: Solve for x
    x = 360,876,448,399.56/674,290.88
  6. Step 6: Final answer
    x = 535,194.03

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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.