Home / 939,686.76-1,296,777.30-509,970.60

Finding the Fourth Proportional to 939,686.76, 1,296,777.30 and 509,970.60

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Solution

The fourth proportional to 939,686.76, 1,296,777.30 and 509,970.60 is: 703,764.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,686.76 : 1,296,777.30 = 509,970.60 : x
  2. Step 2: Convert to fraction form
    939,686.76/1,296,777.30 = 509,970.60/x
  3. Step 3: Cross multiply
    939,686.76x = 1,296,777.30 × 509,970.60
  4. Step 4: Simplify right side
    939,686.76x = 661,318,297,747.38
  5. Step 5: Solve for x
    x = 661,318,297,747.38/939,686.76
  6. Step 6: Final answer
    x = 703,764.62

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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.