Home / 860,270.51-1,290,321.88-261,236.86

Finding the Fourth Proportional to 860,270.51, 1,290,321.88 and 261,236.86

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Solution

The fourth proportional to 860,270.51, 1,290,321.88 and 261,236.86 is: 391,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,270.51 : 1,290,321.88 = 261,236.86 : x
  2. Step 2: Convert to fraction form
    860,270.51/1,290,321.88 = 261,236.86/x
  3. Step 3: Cross multiply
    860,270.51x = 1,290,321.88 × 261,236.86
  4. Step 4: Simplify right side
    860,270.51x = 337,079,636,320.50
  5. Step 5: Solve for x
    x = 337,079,636,320.50/860,270.51
  6. Step 6: Final answer
    x = 391,829.82

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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.