Home / 807,139.20-1,209,844.80-274,166.40

Finding the Fourth Proportional to 807,139.20, 1,209,844.80 and 274,166.40

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Solution

The fourth proportional to 807,139.20, 1,209,844.80 and 274,166.40 is: 410,956.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,139.20 : 1,209,844.80 = 274,166.40 : x
  2. Step 2: Convert to fraction form
    807,139.20/1,209,844.80 = 274,166.40/x
  3. Step 3: Cross multiply
    807,139.20x = 1,209,844.80 × 274,166.40
  4. Step 4: Simplify right side
    807,139.20x = 331,698,793,374.72
  5. Step 5: Solve for x
    x = 331,698,793,374.72/807,139.20
  6. Step 6: Final answer
    x = 410,956.12

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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.