Home / 939,644.76-1,296,719.28-509,928.60

Finding the Fourth Proportional to 939,644.76, 1,296,719.28 and 509,928.60

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Solution

The fourth proportional to 939,644.76, 1,296,719.28 and 509,928.60 is: 703,706.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,644.76 : 1,296,719.28 = 509,928.60 : x
  2. Step 2: Convert to fraction form
    939,644.76/1,296,719.28 = 509,928.60/x
  3. Step 3: Cross multiply
    939,644.76x = 1,296,719.28 × 509,928.60
  4. Step 4: Simplify right side
    939,644.76x = 661,234,247,043.41
  5. Step 5: Solve for x
    x = 661,234,247,043.41/939,644.76
  6. Step 6: Final answer
    x = 703,706.63

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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.