Home / 921,172.53-1,381,887.92-321,997.40

Finding the Fourth Proportional to 921,172.53, 1,381,887.92 and 321,997.40

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Solution

The fourth proportional to 921,172.53, 1,381,887.92 and 321,997.40 is: 483,041.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,172.53 : 1,381,887.92 = 321,997.40 : x
  2. Step 2: Convert to fraction form
    921,172.53/1,381,887.92 = 321,997.40/x
  3. Step 3: Cross multiply
    921,172.53x = 1,381,887.92 × 321,997.40
  4. Step 4: Simplify right side
    921,172.53x = 444,964,319,389.98
  5. Step 5: Solve for x
    x = 444,964,319,389.98/921,172.53
  6. Step 6: Final answer
    x = 483,041.24

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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.