Home / 860,742.77-1,291,186.43-261,709.12

Finding the Fourth Proportional to 860,742.77, 1,291,186.43 and 261,709.12

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Solution

The fourth proportional to 860,742.77, 1,291,186.43 and 261,709.12 is: 392,585.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,742.77 : 1,291,186.43 = 261,709.12 : x
  2. Step 2: Convert to fraction form
    860,742.77/1,291,186.43 = 261,709.12/x
  3. Step 3: Cross multiply
    860,742.77x = 1,291,186.43 × 261,709.12
  4. Step 4: Simplify right side
    860,742.77x = 337,915,265,638.09
  5. Step 5: Solve for x
    x = 337,915,265,638.09/860,742.77
  6. Step 6: Final answer
    x = 392,585.66

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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.