Home / 518,418,299,421.25-781,513,100,695.45-483,860,391,802.45

Finding the Fourth Proportional to 518,418,299,421.25, 781,513,100,695.45 and 483,860,391,802.45

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Solution

The fourth proportional to 518,418,299,421.25, 781,513,100,695.45 and 483,860,391,802.45 is: 729,417,220,656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,418,299,421.25 : 781,513,100,695.45 = 483,860,391,802.45 : x
  2. Step 2: Convert to fraction form
    518,418,299,421.25/781,513,100,695.45 = 483,860,391,802.45/x
  3. Step 3: Cross multiply
    518,418,299,421.25x = 781,513,100,695.45 × 483,860,391,802.45
  4. Step 4: Simplify right side
    518,418,299,421.25x = 378,143,235,101,247,959,728,128
  5. Step 5: Solve for x
    x = 378,143,235,101,247,959,728,128/518,418,299,421.25
  6. Step 6: Final answer
    x = 729,417,220,656.37

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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.