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Finding the Fourth Proportional to 646,203.11, 891,775.92 and 359,742.56

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Solution

The fourth proportional to 646,203.11, 891,775.92 and 359,742.56 is: 496,453.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,203.11 : 891,775.92 = 359,742.56 : x
  2. Step 2: Convert to fraction form
    646,203.11/891,775.92 = 359,742.56/x
  3. Step 3: Cross multiply
    646,203.11x = 891,775.92 × 359,742.56
  4. Step 4: Simplify right side
    646,203.11x = 320,809,747,948.28
  5. Step 5: Solve for x
    x = 320,809,747,948.28/646,203.11
  6. Step 6: Final answer
    x = 496,453.43

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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.