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Finding the Fourth Proportional to 488,809,209.40, 733,213,814.10 and 425,674,018.60

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Solution

The fourth proportional to 488,809,209.40, 733,213,814.10 and 425,674,018.60 is: 638,511,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,809,209.40 : 733,213,814.10 = 425,674,018.60 : x
  2. Step 2: Convert to fraction form
    488,809,209.40/733,213,814.10 = 425,674,018.60/x
  3. Step 3: Cross multiply
    488,809,209.40x = 733,213,814.10 × 425,674,018.60
  4. Step 4: Simplify right side
    488,809,209.40x = 312,110,070,740,980,352
  5. Step 5: Solve for x
    x = 312,110,070,740,980,352/488,809,209.40
  6. Step 6: Final answer
    x = 638,511,027.90

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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.