Home / 857,994.54-1,287,411.61-345,638.36

Finding the Fourth Proportional to 857,994.54, 1,287,411.61 and 345,638.36

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Solution

The fourth proportional to 857,994.54, 1,287,411.61 and 345,638.36 is: 518,626.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,994.54 : 1,287,411.61 = 345,638.36 : x
  2. Step 2: Convert to fraction form
    857,994.54/1,287,411.61 = 345,638.36/x
  3. Step 3: Cross multiply
    857,994.54x = 1,287,411.61 × 345,638.36
  4. Step 4: Simplify right side
    857,994.54x = 444,978,835,515.72
  5. Step 5: Solve for x
    x = 444,978,835,515.72/857,994.54
  6. Step 6: Final answer
    x = 518,626.65

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1.5x scale

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.