Home / 1,358,220.80-2,037,331.20-820,136.79

Finding the Fourth Proportional to 1,358,220.80, 2,037,331.20 and 820,136.79

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Solution

The fourth proportional to 1,358,220.80, 2,037,331.20 and 820,136.79 is: 1,230,205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358,220.80 : 2,037,331.20 = 820,136.79 : x
  2. Step 2: Convert to fraction form
    1,358,220.80/2,037,331.20 = 820,136.79/x
  3. Step 3: Cross multiply
    1,358,220.80x = 2,037,331.20 × 820,136.79
  4. Step 4: Simplify right side
    1,358,220.80x = 1,670,890,265,441.52
  5. Step 5: Solve for x
    x = 1,670,890,265,441.52/1,358,220.80
  6. Step 6: Final answer
    x = 1,230,205.18

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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.