Home / 1,214,587.60-1,821,881.40-426,619.60

Finding the Fourth Proportional to 1,214,587.60, 1,821,881.40 and 426,619.60

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Solution

The fourth proportional to 1,214,587.60, 1,821,881.40 and 426,619.60 is: 639,929.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,587.60 : 1,821,881.40 = 426,619.60 : x
  2. Step 2: Convert to fraction form
    1,214,587.60/1,821,881.40 = 426,619.60/x
  3. Step 3: Cross multiply
    1,214,587.60x = 1,821,881.40 × 426,619.60
  4. Step 4: Simplify right side
    1,214,587.60x = 777,250,314,115.44
  5. Step 5: Solve for x
    x = 777,250,314,115.44/1,214,587.60
  6. Step 6: Final answer
    x = 639,929.40

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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.