Home / 939,719.27-1,296,812.59-509,999.40

Finding the Fourth Proportional to 939,719.27, 1,296,812.59 and 509,999.40

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Solution

The fourth proportional to 939,719.27, 1,296,812.59 and 509,999.40 is: 703,799.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,719.27 : 1,296,812.59 = 509,999.40 : x
  2. Step 2: Convert to fraction form
    939,719.27/1,296,812.59 = 509,999.40/x
  3. Step 3: Cross multiply
    939,719.27x = 1,296,812.59 × 509,999.40
  4. Step 4: Simplify right side
    939,719.27x = 661,373,633,778.39
  5. Step 5: Solve for x
    x = 661,373,633,778.39/939,719.27
  6. Step 6: Final answer
    x = 703,799.16

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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.