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Finding the Fourth Proportional to 612,589.80, 845,250.04 and 357,891.78

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Solution

The fourth proportional to 612,589.80, 845,250.04 and 357,891.78 is: 493,818.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,589.80 : 845,250.04 = 357,891.78 : x
  2. Step 2: Convert to fraction form
    612,589.80/845,250.04 = 357,891.78/x
  3. Step 3: Cross multiply
    612,589.80x = 845,250.04 × 357,891.78
  4. Step 4: Simplify right side
    612,589.80x = 302,508,036,401.53
  5. Step 5: Solve for x
    x = 302,508,036,401.53/612,589.80
  6. Step 6: Final answer
    x = 493,818.27

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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.