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Finding the Fourth Proportional to 491,777.60, 737,666.40 and 439,246.40

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Solution

The fourth proportional to 491,777.60, 737,666.40 and 439,246.40 is: 658,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,777.60 : 737,666.40 = 439,246.40 : x
  2. Step 2: Convert to fraction form
    491,777.60/737,666.40 = 439,246.40/x
  3. Step 3: Cross multiply
    491,777.60x = 737,666.40 × 439,246.40
  4. Step 4: Simplify right side
    491,777.60x = 324,017,310,600.96
  5. Step 5: Solve for x
    x = 324,017,310,600.96/491,777.60
  6. Step 6: Final answer
    x = 658,869.60

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Double scale
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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.