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Finding the Fourth Proportional to 620,125.53, 855,720.90 and 375,201.51

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Solution

The fourth proportional to 620,125.53, 855,720.90 and 375,201.51 is: 517,746.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,125.53 : 855,720.90 = 375,201.51 : x
  2. Step 2: Convert to fraction form
    620,125.53/855,720.90 = 375,201.51/x
  3. Step 3: Cross multiply
    620,125.53x = 855,720.90 × 375,201.51
  4. Step 4: Simplify right side
    620,125.53x = 321,067,773,818.56
  5. Step 5: Solve for x
    x = 321,067,773,818.56/620,125.53
  6. Step 6: Final answer
    x = 517,746.42

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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.