Home / 805,945.81-1,111,441.84-515,649.23

Finding the Fourth Proportional to 805,945.81, 1,111,441.84 and 515,649.23

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Solution

The fourth proportional to 805,945.81, 1,111,441.84 and 515,649.23 is: 711,107.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,945.81 : 1,111,441.84 = 515,649.23 : x
  2. Step 2: Convert to fraction form
    805,945.81/1,111,441.84 = 515,649.23/x
  3. Step 3: Cross multiply
    805,945.81x = 1,111,441.84 × 515,649.23
  4. Step 4: Simplify right side
    805,945.81x = 573,114,132,559.22
  5. Step 5: Solve for x
    x = 573,114,132,559.22/805,945.81
  6. Step 6: Final answer
    x = 711,107.53

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.