Home / 779,979.70-1,169,969.55-405,954.10

Finding the Fourth Proportional to 779,979.70, 1,169,969.55 and 405,954.10

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Solution

The fourth proportional to 779,979.70, 1,169,969.55 and 405,954.10 is: 608,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,979.70 : 1,169,969.55 = 405,954.10 : x
  2. Step 2: Convert to fraction form
    779,979.70/1,169,969.55 = 405,954.10/x
  3. Step 3: Cross multiply
    779,979.70x = 1,169,969.55 × 405,954.10
  4. Step 4: Simplify right side
    779,979.70x = 474,953,935,697.66
  5. Step 5: Solve for x
    x = 474,953,935,697.66/779,979.70
  6. Step 6: Final answer
    x = 608,931.15

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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.