Home / 939,629.83-1,296,690-509,909.96

Finding the Fourth Proportional to 939,629.83, 1,296,690 and 509,909.96

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Solution

The fourth proportional to 939,629.83, 1,296,690 and 509,909.96 is: 703,676.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,629.83 : 1,296,690 = 509,909.96 : x
  2. Step 2: Convert to fraction form
    939,629.83/1,296,690 = 509,909.96/x
  3. Step 3: Cross multiply
    939,629.83x = 1,296,690 × 509,909.96
  4. Step 4: Simplify right side
    939,629.83x = 661,195,146,032.40
  5. Step 5: Solve for x
    x = 661,195,146,032.40/939,629.83
  6. Step 6: Final answer
    x = 703,676.20

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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.