Home / 518,418,299,420.75-781,513,100,694.70-483,860,391,801.95

Finding the Fourth Proportional to 518,418,299,420.75, 781,513,100,694.70 and 483,860,391,801.95

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Solution

The fourth proportional to 518,418,299,420.75, 781,513,100,694.70 and 483,860,391,801.95 is: 729,417,220,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,418,299,420.75 : 781,513,100,694.70 = 483,860,391,801.95 : x
  2. Step 2: Convert to fraction form
    518,418,299,420.75/781,513,100,694.70 = 483,860,391,801.95/x
  3. Step 3: Cross multiply
    518,418,299,420.75x = 781,513,100,694.70 × 483,860,391,801.95
  4. Step 4: Simplify right side
    518,418,299,420.75x = 378,143,235,100,494,327,185,408
  5. Step 5: Solve for x
    x = 378,143,235,100,494,327,185,408/518,418,299,420.75
  6. Step 6: Final answer
    x = 729,417,220,655.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.