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Finding the Fourth Proportional to 420,245.83, 627,091.01 and 374,955.89

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Solution

The fourth proportional to 420,245.83, 627,091.01 and 374,955.89 is: 559,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,245.83 : 627,091.01 = 374,955.89 : x
  2. Step 2: Convert to fraction form
    420,245.83/627,091.01 = 374,955.89/x
  3. Step 3: Cross multiply
    420,245.83x = 627,091.01 × 374,955.89
  4. Step 4: Simplify right side
    420,245.83x = 235,131,467,765.55
  5. Step 5: Solve for x
    x = 235,131,467,765.55/420,245.83
  6. Step 6: Final answer
    x = 559,509.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.