Home / 1,280,743.20-1,918,587.60-650,109.60

Finding the Fourth Proportional to 1,280,743.20, 1,918,587.60 and 650,109.60

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Solution

The fourth proportional to 1,280,743.20, 1,918,587.60 and 650,109.60 is: 973,881.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,743.20 : 1,918,587.60 = 650,109.60 : x
  2. Step 2: Convert to fraction form
    1,280,743.20/1,918,587.60 = 650,109.60/x
  3. Step 3: Cross multiply
    1,280,743.20x = 1,918,587.60 × 650,109.60
  4. Step 4: Simplify right side
    1,280,743.20x = 1,247,292,217,200.96
  5. Step 5: Solve for x
    x = 1,247,292,217,200.96/1,280,743.20
  6. Step 6: Final answer
    x = 973,881.58

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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.