Home / 939,878.34-1,296,997.38-510,149.40

Finding the Fourth Proportional to 939,878.34, 1,296,997.38 and 510,149.40

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Solution

The fourth proportional to 939,878.34, 1,296,997.38 and 510,149.40 is: 703,987.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,878.34 : 1,296,997.38 = 510,149.40 : x
  2. Step 2: Convert to fraction form
    939,878.34/1,296,997.38 = 510,149.40/x
  3. Step 3: Cross multiply
    939,878.34x = 1,296,997.38 × 510,149.40
  4. Step 4: Simplify right side
    939,878.34x = 661,662,435,208.57
  5. Step 5: Solve for x
    x = 661,662,435,208.57/939,878.34
  6. Step 6: Final answer
    x = 703,987.32

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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.