Home / 634,287,486.78-875,322,705.06-355,834,989.02

Finding the Fourth Proportional to 634,287,486.78, 875,322,705.06 and 355,834,989.02

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Solution

The fourth proportional to 634,287,486.78, 875,322,705.06 and 355,834,989.02 is: 491,055,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,287,486.78 : 875,322,705.06 = 355,834,989.02 : x
  2. Step 2: Convert to fraction form
    634,287,486.78/875,322,705.06 = 355,834,989.02/x
  3. Step 3: Cross multiply
    634,287,486.78x = 875,322,705.06 × 355,834,989.02
  4. Step 4: Simplify right side
    634,287,486.78x = 311,470,445,143,981,760
  5. Step 5: Solve for x
    x = 311,470,445,143,981,760/634,287,486.78
  6. Step 6: Final answer
    x = 491,055,635.87

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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.