Home / 939,647.39-1,296,722.91-509,931.23

Finding the Fourth Proportional to 939,647.39, 1,296,722.91 and 509,931.23

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Solution

The fourth proportional to 939,647.39, 1,296,722.91 and 509,931.23 is: 703,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,647.39 : 1,296,722.91 = 509,931.23 : x
  2. Step 2: Convert to fraction form
    939,647.39/1,296,722.91 = 509,931.23/x
  3. Step 3: Cross multiply
    939,647.39x = 1,296,722.91 × 509,931.23
  4. Step 4: Simplify right side
    939,647.39x = 661,239,508,465.48
  5. Step 5: Solve for x
    x = 661,239,508,465.48/939,647.39
  6. Step 6: Final answer
    x = 703,710.26

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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.