Home / 1,260,358.80-1,890,538.20-419,040.40

Finding the Fourth Proportional to 1,260,358.80, 1,890,538.20 and 419,040.40

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Solution

The fourth proportional to 1,260,358.80, 1,890,538.20 and 419,040.40 is: 628,560.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,358.80 : 1,890,538.20 = 419,040.40 : x
  2. Step 2: Convert to fraction form
    1,260,358.80/1,890,538.20 = 419,040.40/x
  3. Step 3: Cross multiply
    1,260,358.80x = 1,890,538.20 × 419,040.40
  4. Step 4: Simplify right side
    1,260,358.80x = 792,211,883,543.28
  5. Step 5: Solve for x
    x = 792,211,883,543.28/1,260,358.80
  6. Step 6: Final answer
    x = 628,560.60

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Double scale
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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.