Home / 1,122,819.76-1,549,489.62-639,385

Finding the Fourth Proportional to 1,122,819.76, 1,549,489.62 and 639,385

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Solution

The fourth proportional to 1,122,819.76, 1,549,489.62 and 639,385 is: 882,350.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122,819.76 : 1,549,489.62 = 639,385 : x
  2. Step 2: Convert to fraction form
    1,122,819.76/1,549,489.62 = 639,385/x
  3. Step 3: Cross multiply
    1,122,819.76x = 1,549,489.62 × 639,385
  4. Step 4: Simplify right side
    1,122,819.76x = 990,720,420,683.70
  5. Step 5: Solve for x
    x = 990,720,420,683.70/1,122,819.76
  6. Step 6: Final answer
    x = 882,350.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.