Home / 656,854,977.74-906,462,270.78-355,440,290.90

Finding the Fourth Proportional to 656,854,977.74, 906,462,270.78 and 355,440,290.90

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Solution

The fourth proportional to 656,854,977.74, 906,462,270.78 and 355,440,290.90 is: 490,508,900.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,854,977.74 : 906,462,270.78 = 355,440,290.90 : x
  2. Step 2: Convert to fraction form
    656,854,977.74/906,462,270.78 = 355,440,290.90/x
  3. Step 3: Cross multiply
    656,854,977.74x = 906,462,270.78 × 355,440,290.90
  4. Step 4: Simplify right side
    656,854,977.74x = 322,193,213,215,917,760
  5. Step 5: Solve for x
    x = 322,193,213,215,917,760/656,854,977.74
  6. Step 6: Final answer
    x = 490,508,900.95

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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.