Home / 466,669.76-643,780.16-305,453.76

Finding the Fourth Proportional to 466,669.76, 643,780.16 and 305,453.76

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Solution

The fourth proportional to 466,669.76, 643,780.16 and 305,453.76 is: 421,379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    466,669.76 : 643,780.16 = 305,453.76 : x
  2. Step 2: Convert to fraction form
    466,669.76/643,780.16 = 305,453.76/x
  3. Step 3: Cross multiply
    466,669.76x = 643,780.16 × 305,453.76
  4. Step 4: Simplify right side
    466,669.76x = 196,645,070,485.40
  5. Step 5: Solve for x
    x = 196,645,070,485.40/466,669.76
  6. Step 6: Final answer
    x = 421,379.50

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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.