Home / 680,970.31-939,669.49-419,284.06

Finding the Fourth Proportional to 680,970.31, 939,669.49 and 419,284.06

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Solution

The fourth proportional to 680,970.31, 939,669.49 and 419,284.06 is: 578,569.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,970.31 : 939,669.49 = 419,284.06 : x
  2. Step 2: Convert to fraction form
    680,970.31/939,669.49 = 419,284.06/x
  3. Step 3: Cross multiply
    680,970.31x = 939,669.49 × 419,284.06
  4. Step 4: Simplify right side
    680,970.31x = 393,988,437,000.26
  5. Step 5: Solve for x
    x = 393,988,437,000.26/680,970.31
  6. Step 6: Final answer
    x = 578,569.19

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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.