Home / 860,761.23-1,187,994.65-498,122.61

Finding the Fourth Proportional to 860,761.23, 1,187,994.65 and 498,122.61

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Solution

The fourth proportional to 860,761.23, 1,187,994.65 and 498,122.61 is: 687,492.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,761.23 : 1,187,994.65 = 498,122.61 : x
  2. Step 2: Convert to fraction form
    860,761.23/1,187,994.65 = 498,122.61/x
  3. Step 3: Cross multiply
    860,761.23x = 1,187,994.65 × 498,122.61
  4. Step 4: Simplify right side
    860,761.23x = 591,766,993,233.42
  5. Step 5: Solve for x
    x = 591,766,993,233.42/860,761.23
  6. Step 6: Final answer
    x = 687,492.62

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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.