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Finding the Fourth Proportional to 620,178.12, 855,793.26 and 375,254.10

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Solution

The fourth proportional to 620,178.12, 855,793.26 and 375,254.10 is: 517,818.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,178.12 : 855,793.26 = 375,254.10 : x
  2. Step 2: Convert to fraction form
    620,178.12/855,793.26 = 375,254.10/x
  3. Step 3: Cross multiply
    620,178.12x = 855,793.26 × 375,254.10
  4. Step 4: Simplify right side
    620,178.12x = 321,139,929,567.37
  5. Step 5: Solve for x
    x = 321,139,929,567.37/620,178.12
  6. Step 6: Final answer
    x = 517,818.86

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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.