Home / 1,274,531.94-1,912,980.51-643,888.62

Finding the Fourth Proportional to 1,274,531.94, 1,912,980.51 and 643,888.62

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Solution

The fourth proportional to 1,274,531.94, 1,912,980.51 and 643,888.62 is: 966,430.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,274,531.94 : 1,912,980.51 = 643,888.62 : x
  2. Step 2: Convert to fraction form
    1,274,531.94/1,912,980.51 = 643,888.62/x
  3. Step 3: Cross multiply
    1,274,531.94x = 1,912,980.51 × 643,888.62
  4. Step 4: Simplify right side
    1,274,531.94x = 1,231,746,380,670.80
  5. Step 5: Solve for x
    x = 1,231,746,380,670.80/1,274,531.94
  6. Step 6: Final answer
    x = 966,430.37

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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.