Home / 939,687.51-1,296,778.34-509,971.35

Finding the Fourth Proportional to 939,687.51, 1,296,778.34 and 509,971.35

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Solution

The fourth proportional to 939,687.51, 1,296,778.34 and 509,971.35 is: 703,765.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,687.51 : 1,296,778.34 = 509,971.35 : x
  2. Step 2: Convert to fraction form
    939,687.51/1,296,778.34 = 509,971.35/x
  3. Step 3: Cross multiply
    939,687.51x = 1,296,778.34 × 509,971.35
  4. Step 4: Simplify right side
    939,687.51x = 661,319,798,150.70
  5. Step 5: Solve for x
    x = 661,319,798,150.70/939,687.51
  6. Step 6: Final answer
    x = 703,765.66

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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.