Home / 821,178.76-1,230,050.46-660,384.04

Finding the Fourth Proportional to 821,178.76, 1,230,050.46 and 660,384.04

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Solution

The fourth proportional to 821,178.76, 1,230,050.46 and 660,384.04 is: 989,194.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,178.76 : 1,230,050.46 = 660,384.04 : x
  2. Step 2: Convert to fraction form
    821,178.76/1,230,050.46 = 660,384.04/x
  3. Step 3: Cross multiply
    821,178.76x = 1,230,050.46 × 660,384.04
  4. Step 4: Simplify right side
    821,178.76x = 812,305,689,103.53
  5. Step 5: Solve for x
    x = 812,305,689,103.53/821,178.76
  6. Step 6: Final answer
    x = 989,194.72

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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.