Home / 779,979.20-1,169,968.80-405,953.60

Finding the Fourth Proportional to 779,979.20, 1,169,968.80 and 405,953.60

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Solution

The fourth proportional to 779,979.20, 1,169,968.80 and 405,953.60 is: 608,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,979.20 : 1,169,968.80 = 405,953.60 : x
  2. Step 2: Convert to fraction form
    779,979.20/1,169,968.80 = 405,953.60/x
  3. Step 3: Cross multiply
    779,979.20x = 1,169,968.80 × 405,953.60
  4. Step 4: Simplify right side
    779,979.20x = 474,953,046,247.68
  5. Step 5: Solve for x
    x = 474,953,046,247.68/779,979.20
  6. Step 6: Final answer
    x = 608,930.40

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.