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Finding the Fourth Proportional to 497,990,679.60, 746,986,019.40 and 325,998,001.20

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Solution

The fourth proportional to 497,990,679.60, 746,986,019.40 and 325,998,001.20 is: 488,997,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,990,679.60 : 746,986,019.40 = 325,998,001.20 : x
  2. Step 2: Convert to fraction form
    497,990,679.60/746,986,019.40 = 325,998,001.20/x
  3. Step 3: Cross multiply
    497,990,679.60x = 746,986,019.40 × 325,998,001.20
  4. Step 4: Simplify right side
    497,990,679.60x = 243,515,949,248,744,416
  5. Step 5: Solve for x
    x = 243,515,949,248,744,416/497,990,679.60
  6. Step 6: Final answer
    x = 488,997,001.80

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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.