Home / 805,940.20-1,208,564.70-406,426.60

Finding the Fourth Proportional to 805,940.20, 1,208,564.70 and 406,426.60

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Solution

The fourth proportional to 805,940.20, 1,208,564.70 and 406,426.60 is: 609,465.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,940.20 : 1,208,564.70 = 406,426.60 : x
  2. Step 2: Convert to fraction form
    805,940.20/1,208,564.70 = 406,426.60/x
  3. Step 3: Cross multiply
    805,940.20x = 1,208,564.70 × 406,426.60
  4. Step 4: Simplify right side
    805,940.20x = 491,192,841,901.02
  5. Step 5: Solve for x
    x = 491,192,841,901.02/805,940.20
  6. Step 6: Final answer
    x = 609,465.62

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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.