Home / 820,537.60-1,230,806.40-809,478.40

Finding the Fourth Proportional to 820,537.60, 1,230,806.40 and 809,478.40

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Solution

The fourth proportional to 820,537.60, 1,230,806.40 and 809,478.40 is: 1,214,217.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,537.60 : 1,230,806.40 = 809,478.40 : x
  2. Step 2: Convert to fraction form
    820,537.60/1,230,806.40 = 809,478.40/x
  3. Step 3: Cross multiply
    820,537.60x = 1,230,806.40 × 809,478.40
  4. Step 4: Simplify right side
    820,537.60x = 996,311,195,381.76
  5. Step 5: Solve for x
    x = 996,311,195,381.76/820,537.60
  6. Step 6: Final answer
    x = 1,214,217.60

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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.