Home / 680,973.31-939,673.63-419,287.06

Finding the Fourth Proportional to 680,973.31, 939,673.63 and 419,287.06

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Solution

The fourth proportional to 680,973.31, 939,673.63 and 419,287.06 is: 578,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,973.31 : 939,673.63 = 419,287.06 : x
  2. Step 2: Convert to fraction form
    680,973.31/939,673.63 = 419,287.06/x
  3. Step 3: Cross multiply
    680,973.31x = 939,673.63 × 419,287.06
  4. Step 4: Simplify right side
    680,973.31x = 393,992,993,682.23
  5. Step 5: Solve for x
    x = 393,992,993,682.23/680,973.31
  6. Step 6: Final answer
    x = 578,573.33

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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.