Home / 515,781,605.40-773,672,408.10-459,346,507.80

Finding the Fourth Proportional to 515,781,605.40, 773,672,408.10 and 459,346,507.80

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Solution

The fourth proportional to 515,781,605.40, 773,672,408.10 and 459,346,507.80 is: 689,019,761.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,781,605.40 : 773,672,408.10 = 459,346,507.80 : x
  2. Step 2: Convert to fraction form
    515,781,605.40/773,672,408.10 = 459,346,507.80/x
  3. Step 3: Cross multiply
    515,781,605.40x = 773,672,408.10 × 459,346,507.80
  4. Step 4: Simplify right side
    515,781,605.40x = 355,383,718,841,951,424
  5. Step 5: Solve for x
    x = 355,383,718,841,951,424/515,781,605.40
  6. Step 6: Final answer
    x = 689,019,761.70

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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.