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Finding the Fourth Proportional to 613,675.20, 846,881.28 and 345,403.20

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Solution

The fourth proportional to 613,675.20, 846,881.28 and 345,403.20 is: 476,661.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,675.20 : 846,881.28 = 345,403.20 : x
  2. Step 2: Convert to fraction form
    613,675.20/846,881.28 = 345,403.20/x
  3. Step 3: Cross multiply
    613,675.20x = 846,881.28 × 345,403.20
  4. Step 4: Simplify right side
    613,675.20x = 292,515,504,132.10
  5. Step 5: Solve for x
    x = 292,515,504,132.10/613,675.20
  6. Step 6: Final answer
    x = 476,661.77

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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.