Home / 939,627.25-1,296,686.44-509,907.38

Finding the Fourth Proportional to 939,627.25, 1,296,686.44 and 509,907.38

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Solution

The fourth proportional to 939,627.25, 1,296,686.44 and 509,907.38 is: 703,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,627.25 : 1,296,686.44 = 509,907.38 : x
  2. Step 2: Convert to fraction form
    939,627.25/1,296,686.44 = 509,907.38/x
  3. Step 3: Cross multiply
    939,627.25x = 1,296,686.44 × 509,907.38
  4. Step 4: Simplify right side
    939,627.25x = 661,189,980,951.61
  5. Step 5: Solve for x
    x = 661,189,980,951.61/939,627.25
  6. Step 6: Final answer
    x = 703,672.63

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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.