Home / 681,463.20-939,918.78-439,623.12

Finding the Fourth Proportional to 681,463.20, 939,918.78 and 439,623.12

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Solution

The fourth proportional to 681,463.20, 939,918.78 and 439,623.12 is: 606,357.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,463.20 : 939,918.78 = 439,623.12 : x
  2. Step 2: Convert to fraction form
    681,463.20/939,918.78 = 439,623.12/x
  3. Step 3: Cross multiply
    681,463.20x = 939,918.78 × 439,623.12
  4. Step 4: Simplify right side
    681,463.20x = 413,210,026,610.19
  5. Step 5: Solve for x
    x = 413,210,026,610.19/681,463.20
  6. Step 6: Final answer
    x = 606,357.07

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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.