Home / 939,641.06-1,296,704.61-509,921.19

Finding the Fourth Proportional to 939,641.06, 1,296,704.61 and 509,921.19

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Solution

The fourth proportional to 939,641.06, 1,296,704.61 and 509,921.19 is: 703,691.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,641.06 : 1,296,704.61 = 509,921.19 : x
  2. Step 2: Convert to fraction form
    939,641.06/1,296,704.61 = 509,921.19/x
  3. Step 3: Cross multiply
    939,641.06x = 1,296,704.61 × 509,921.19
  4. Step 4: Simplify right side
    939,641.06x = 661,217,153,056.27
  5. Step 5: Solve for x
    x = 661,217,153,056.27/939,641.06
  6. Step 6: Final answer
    x = 703,691.21

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Double scale
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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.