Home / 1,260,435.20-1,890,652.80-418,877.60

Finding the Fourth Proportional to 1,260,435.20, 1,890,652.80 and 418,877.60

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Solution

The fourth proportional to 1,260,435.20, 1,890,652.80 and 418,877.60 is: 628,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,435.20 : 1,890,652.80 = 418,877.60 : x
  2. Step 2: Convert to fraction form
    1,260,435.20/1,890,652.80 = 418,877.60/x
  3. Step 3: Cross multiply
    1,260,435.20x = 1,890,652.80 × 418,877.60
  4. Step 4: Simplify right side
    1,260,435.20x = 791,952,107,297.28
  5. Step 5: Solve for x
    x = 791,952,107,297.28/1,260,435.20
  6. Step 6: Final answer
    x = 628,316.40

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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.