Home / 920,199.60-1,380,299.40-521,618.85

Finding the Fourth Proportional to 920,199.60, 1,380,299.40 and 521,618.85

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Solution

The fourth proportional to 920,199.60, 1,380,299.40 and 521,618.85 is: 782,428.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,199.60 : 1,380,299.40 = 521,618.85 : x
  2. Step 2: Convert to fraction form
    920,199.60/1,380,299.40 = 521,618.85/x
  3. Step 3: Cross multiply
    920,199.60x = 1,380,299.40 × 521,618.85
  4. Step 4: Simplify right side
    920,199.60x = 719,990,185,683.69
  5. Step 5: Solve for x
    x = 719,990,185,683.69/920,199.60
  6. Step 6: Final answer
    x = 782,428.28

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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.