Home / 830,105.60-1,246,324.80-515,177.60

Finding the Fourth Proportional to 830,105.60, 1,246,324.80 and 515,177.60

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Solution

The fourth proportional to 830,105.60, 1,246,324.80 and 515,177.60 is: 773,490.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,105.60 : 1,246,324.80 = 515,177.60 : x
  2. Step 2: Convert to fraction form
    830,105.60/1,246,324.80 = 515,177.60/x
  3. Step 3: Cross multiply
    830,105.60x = 1,246,324.80 × 515,177.60
  4. Step 4: Simplify right side
    830,105.60x = 642,078,619,284.48
  5. Step 5: Solve for x
    x = 642,078,619,284.48/830,105.60
  6. Step 6: Final answer
    x = 773,490.29

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.