Home / 860,343.08-1,187,568.78-520,811.42

Finding the Fourth Proportional to 860,343.08, 1,187,568.78 and 520,811.42

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Solution

The fourth proportional to 860,343.08, 1,187,568.78 and 520,811.42 is: 718,898.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,343.08 : 1,187,568.78 = 520,811.42 : x
  2. Step 2: Convert to fraction form
    860,343.08/1,187,568.78 = 520,811.42/x
  3. Step 3: Cross multiply
    860,343.08x = 1,187,568.78 × 520,811.42
  4. Step 4: Simplify right side
    860,343.08x = 618,499,382,659.47
  5. Step 5: Solve for x
    x = 618,499,382,659.47/860,343.08
  6. Step 6: Final answer
    x = 718,898.54

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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.