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Finding the Fourth Proportional to 496,347.20, 744,520.80 and 307,390.40

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Solution

The fourth proportional to 496,347.20, 744,520.80 and 307,390.40 is: 461,085.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,347.20 : 744,520.80 = 307,390.40 : x
  2. Step 2: Convert to fraction form
    496,347.20/744,520.80 = 307,390.40/x
  3. Step 3: Cross multiply
    496,347.20x = 744,520.80 × 307,390.40
  4. Step 4: Simplify right side
    496,347.20x = 228,858,546,520.32
  5. Step 5: Solve for x
    x = 228,858,546,520.32/496,347.20
  6. Step 6: Final answer
    x = 461,085.60

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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.