Home / 791,435,438.82-1,187,163,261.48-209,164,653.66

Finding the Fourth Proportional to 791,435,438.82, 1,187,163,261.48 and 209,164,653.66

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Solution

The fourth proportional to 791,435,438.82, 1,187,163,261.48 and 209,164,653.66 is: 313,749,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,435,438.82 : 1,187,163,261.48 = 209,164,653.66 : x
  2. Step 2: Convert to fraction form
    791,435,438.82/1,187,163,261.48 = 209,164,653.66/x
  3. Step 3: Cross multiply
    791,435,438.82x = 1,187,163,261.48 × 209,164,653.66
  4. Step 4: Simplify right side
    791,435,438.82x = 248,312,592,425,340,224
  5. Step 5: Solve for x
    x = 248,312,592,425,340,224/791,435,438.82
  6. Step 6: Final answer
    x = 313,749,650.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.