Home / 721,878.20-1,082,817.30-553,916.60

Finding the Fourth Proportional to 721,878.20, 1,082,817.30 and 553,916.60

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Solution

The fourth proportional to 721,878.20, 1,082,817.30 and 553,916.60 is: 830,874.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,878.20 : 1,082,817.30 = 553,916.60 : x
  2. Step 2: Convert to fraction form
    721,878.20/1,082,817.30 = 553,916.60/x
  3. Step 3: Cross multiply
    721,878.20x = 1,082,817.30 × 553,916.60
  4. Step 4: Simplify right side
    721,878.20x = 599,790,477,237.18
  5. Step 5: Solve for x
    x = 599,790,477,237.18/721,878.20
  6. Step 6: Final answer
    x = 830,874.90

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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.