Home / 864,090.60-1,296,135.90-612,148.20

Finding the Fourth Proportional to 864,090.60, 1,296,135.90 and 612,148.20

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Solution

The fourth proportional to 864,090.60, 1,296,135.90 and 612,148.20 is: 918,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,090.60 : 1,296,135.90 = 612,148.20 : x
  2. Step 2: Convert to fraction form
    864,090.60/1,296,135.90 = 612,148.20/x
  3. Step 3: Cross multiply
    864,090.60x = 1,296,135.90 × 612,148.20
  4. Step 4: Simplify right side
    864,090.60x = 793,427,258,140.38
  5. Step 5: Solve for x
    x = 793,427,258,140.38/864,090.60
  6. Step 6: Final answer
    x = 918,222.30

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Double scale
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Similar ratio
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1.5x scale

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.