Home / 859,676.20-1,289,525.10-260,643.40

Finding the Fourth Proportional to 859,676.20, 1,289,525.10 and 260,643.40

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Solution

The fourth proportional to 859,676.20, 1,289,525.10 and 260,643.40 is: 390,968.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,676.20 : 1,289,525.10 = 260,643.40 : x
  2. Step 2: Convert to fraction form
    859,676.20/1,289,525.10 = 260,643.40/x
  3. Step 3: Cross multiply
    859,676.20x = 1,289,525.10 × 260,643.40
  4. Step 4: Simplify right side
    859,676.20x = 336,106,206,449.34
  5. Step 5: Solve for x
    x = 336,106,206,449.34/859,676.20
  6. Step 6: Final answer
    x = 390,968.37

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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.