Home / 700,138.40-1,050,207.60-419,511.20

Finding the Fourth Proportional to 700,138.40, 1,050,207.60 and 419,511.20

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Solution

The fourth proportional to 700,138.40, 1,050,207.60 and 419,511.20 is: 629,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,138.40 : 1,050,207.60 = 419,511.20 : x
  2. Step 2: Convert to fraction form
    700,138.40/1,050,207.60 = 419,511.20/x
  3. Step 3: Cross multiply
    700,138.40x = 1,050,207.60 × 419,511.20
  4. Step 4: Simplify right side
    700,138.40x = 440,573,850,525.12
  5. Step 5: Solve for x
    x = 440,573,850,525.12/700,138.40
  6. Step 6: Final answer
    x = 629,266.80

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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.