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Finding the Fourth Proportional to 553,881,788.83, 764,375,099.82 and 302,980,438.95

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Solution

The fourth proportional to 553,881,788.83, 764,375,099.82 and 302,980,438.95 is: 418,122,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,881,788.83 : 764,375,099.82 = 302,980,438.95 : x
  2. Step 2: Convert to fraction form
    553,881,788.83/764,375,099.82 = 302,980,438.95/x
  3. Step 3: Cross multiply
    553,881,788.83x = 764,375,099.82 × 302,980,438.95
  4. Step 4: Simplify right side
    553,881,788.83x = 231,590,703,265,913,664
  5. Step 5: Solve for x
    x = 231,590,703,265,913,664/553,881,788.83
  6. Step 6: Final answer
    x = 418,122,978.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.