Home / 860,954.61-1,291,389.20-321,168.84

Finding the Fourth Proportional to 860,954.61, 1,291,389.20 and 321,168.84

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Solution

The fourth proportional to 860,954.61, 1,291,389.20 and 321,168.84 is: 481,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,954.61 : 1,291,389.20 = 321,168.84 : x
  2. Step 2: Convert to fraction form
    860,954.61/1,291,389.20 = 321,168.84/x
  3. Step 3: Cross multiply
    860,954.61x = 1,291,389.20 × 321,168.84
  4. Step 4: Simplify right side
    860,954.61x = 414,753,966,108.36
  5. Step 5: Solve for x
    x = 414,753,966,108.36/860,954.61
  6. Step 6: Final answer
    x = 481,737.32

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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.