Home / 1,292,450.87-1,938,955.95-393,868.86

Finding the Fourth Proportional to 1,292,450.87, 1,938,955.95 and 393,868.86

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Solution

The fourth proportional to 1,292,450.87, 1,938,955.95 and 393,868.86 is: 590,888.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,450.87 : 1,938,955.95 = 393,868.86 : x
  2. Step 2: Convert to fraction form
    1,292,450.87/1,938,955.95 = 393,868.86/x
  3. Step 3: Cross multiply
    1,292,450.87x = 1,938,955.95 × 393,868.86
  4. Step 4: Simplify right side
    1,292,450.87x = 763,694,369,616.72
  5. Step 5: Solve for x
    x = 763,694,369,616.72/1,292,450.87
  6. Step 6: Final answer
    x = 590,888.51

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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.