Home / 939,638.52-1,296,701.12-509,918.66

Finding the Fourth Proportional to 939,638.52, 1,296,701.12 and 509,918.66

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Solution

The fourth proportional to 939,638.52, 1,296,701.12 and 509,918.66 is: 703,687.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,638.52 : 1,296,701.12 = 509,918.66 : x
  2. Step 2: Convert to fraction form
    939,638.52/1,296,701.12 = 509,918.66/x
  3. Step 3: Cross multiply
    939,638.52x = 1,296,701.12 × 509,918.66
  4. Step 4: Simplify right side
    939,638.52x = 661,212,088,497.80
  5. Step 5: Solve for x
    x = 661,212,088,497.80/939,638.52
  6. Step 6: Final answer
    x = 703,687.72

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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.