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Finding the Fourth Proportional to 646,397.42, 891,892.62 and 374,449.03

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Solution

The fourth proportional to 646,397.42, 891,892.62 and 374,449.03 is: 516,660.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,397.42 : 891,892.62 = 374,449.03 : x
  2. Step 2: Convert to fraction form
    646,397.42/891,892.62 = 374,449.03/x
  3. Step 3: Cross multiply
    646,397.42x = 891,892.62 × 374,449.03
  4. Step 4: Simplify right side
    646,397.42x = 333,968,324,193.43
  5. Step 5: Solve for x
    x = 333,968,324,193.43/646,397.42
  6. Step 6: Final answer
    x = 516,660.98

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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.