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Finding the Fourth Proportional to 499,486,492.80, 749,229,739.20 and 491,833,742.40

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Solution

The fourth proportional to 499,486,492.80, 749,229,739.20 and 491,833,742.40 is: 737,750,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,486,492.80 : 749,229,739.20 = 491,833,742.40 : x
  2. Step 2: Convert to fraction form
    499,486,492.80/749,229,739.20 = 491,833,742.40/x
  3. Step 3: Cross multiply
    499,486,492.80x = 749,229,739.20 × 491,833,742.40
  4. Step 4: Simplify right side
    499,486,492.80x = 368,496,466,548,112,000
  5. Step 5: Solve for x
    x = 368,496,466,548,112,000/499,486,492.80
  6. Step 6: Final answer
    x = 737,750,613.60

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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.