Home / 656,977.50-906,631.11-355,173.66

Finding the Fourth Proportional to 656,977.50, 906,631.11 and 355,173.66

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Solution

The fourth proportional to 656,977.50, 906,631.11 and 355,173.66 is: 490,140.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,977.50 : 906,631.11 = 355,173.66 : x
  2. Step 2: Convert to fraction form
    656,977.50/906,631.11 = 355,173.66/x
  3. Step 3: Cross multiply
    656,977.50x = 906,631.11 × 355,173.66
  4. Step 4: Simplify right side
    656,977.50x = 322,011,489,608.56
  5. Step 5: Solve for x
    x = 322,011,489,608.56/656,977.50
  6. Step 6: Final answer
    x = 490,140.82

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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.