Home / 830,128.60-1,246,359.30-515,200.60

Finding the Fourth Proportional to 830,128.60, 1,246,359.30 and 515,200.60

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Solution

The fourth proportional to 830,128.60, 1,246,359.30 and 515,200.60 is: 773,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,128.60 : 1,246,359.30 = 515,200.60 : x
  2. Step 2: Convert to fraction form
    830,128.60/1,246,359.30 = 515,200.60/x
  3. Step 3: Cross multiply
    830,128.60x = 1,246,359.30 × 515,200.60
  4. Step 4: Simplify right side
    830,128.60x = 642,125,059,175.58
  5. Step 5: Solve for x
    x = 642,125,059,175.58/830,128.60
  6. Step 6: Final answer
    x = 773,524.80

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Double scale
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1.5x scale

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.