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Finding the Fourth Proportional to 453,739.70, 680,609.55 and 418,310.30

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Solution

The fourth proportional to 453,739.70, 680,609.55 and 418,310.30 is: 627,465.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,739.70 : 680,609.55 = 418,310.30 : x
  2. Step 2: Convert to fraction form
    453,739.70/680,609.55 = 418,310.30/x
  3. Step 3: Cross multiply
    453,739.70x = 680,609.55 × 418,310.30
  4. Step 4: Simplify right side
    453,739.70x = 284,705,985,043.37
  5. Step 5: Solve for x
    x = 284,705,985,043.37/453,739.70
  6. Step 6: Final answer
    x = 627,465.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.