Home / 809,201.70-1,213,802.55-557,259.30

Finding the Fourth Proportional to 809,201.70, 1,213,802.55 and 557,259.30

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Solution

The fourth proportional to 809,201.70, 1,213,802.55 and 557,259.30 is: 835,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,201.70 : 1,213,802.55 = 557,259.30 : x
  2. Step 2: Convert to fraction form
    809,201.70/1,213,802.55 = 557,259.30/x
  3. Step 3: Cross multiply
    809,201.70x = 1,213,802.55 × 557,259.30
  4. Step 4: Simplify right side
    809,201.70x = 676,402,759,351.22
  5. Step 5: Solve for x
    x = 676,402,759,351.22/809,201.70
  6. Step 6: Final answer
    x = 835,888.95

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Half scale
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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.