Home / 685,117.60-1,027,676.40-638,461.60

Finding the Fourth Proportional to 685,117.60, 1,027,676.40 and 638,461.60

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Solution

The fourth proportional to 685,117.60, 1,027,676.40 and 638,461.60 is: 957,692.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,117.60 : 1,027,676.40 = 638,461.60 : x
  2. Step 2: Convert to fraction form
    685,117.60/1,027,676.40 = 638,461.60/x
  3. Step 3: Cross multiply
    685,117.60x = 1,027,676.40 × 638,461.60
  4. Step 4: Simplify right side
    685,117.60x = 656,131,918,626.24
  5. Step 5: Solve for x
    x = 656,131,918,626.24/685,117.60
  6. Step 6: Final answer
    x = 957,692.40

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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.