Home / 939,712.44-1,296,803.84-509,992.41

Finding the Fourth Proportional to 939,712.44, 1,296,803.84 and 509,992.41

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Solution

The fourth proportional to 939,712.44, 1,296,803.84 and 509,992.41 is: 703,789.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,712.44 : 1,296,803.84 = 509,992.41 : x
  2. Step 2: Convert to fraction form
    939,712.44/1,296,803.84 = 509,992.41/x
  3. Step 3: Cross multiply
    939,712.44x = 1,296,803.84 × 509,992.41
  4. Step 4: Simplify right side
    939,712.44x = 661,360,113,108.89
  5. Step 5: Solve for x
    x = 661,360,113,108.89/939,712.44
  6. Step 6: Final answer
    x = 703,789.89

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1.5x scale

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.