Home / 939,657.38-1,296,728.09-509,937.59

Finding the Fourth Proportional to 939,657.38, 1,296,728.09 and 509,937.59

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Solution

The fourth proportional to 939,657.38, 1,296,728.09 and 509,937.59 is: 703,714.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,657.38 : 1,296,728.09 = 509,937.59 : x
  2. Step 2: Convert to fraction form
    939,657.38/1,296,728.09 = 509,937.59/x
  3. Step 3: Cross multiply
    939,657.38x = 1,296,728.09 × 509,937.59
  4. Step 4: Simplify right side
    939,657.38x = 661,250,399,704.30
  5. Step 5: Solve for x
    x = 661,250,399,704.30/939,657.38
  6. Step 6: Final answer
    x = 703,714.37

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Double scale
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Similar ratio
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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.