Home / 810,131.60-1,215,197.40-684,160.40

Finding the Fourth Proportional to 810,131.60, 1,215,197.40 and 684,160.40

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Solution

The fourth proportional to 810,131.60, 1,215,197.40 and 684,160.40 is: 1,026,240.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,131.60 : 1,215,197.40 = 684,160.40 : x
  2. Step 2: Convert to fraction form
    810,131.60/1,215,197.40 = 684,160.40/x
  3. Step 3: Cross multiply
    810,131.60x = 1,215,197.40 × 684,160.40
  4. Step 4: Simplify right side
    810,131.60x = 831,389,939,262.96
  5. Step 5: Solve for x
    x = 831,389,939,262.96/810,131.60
  6. Step 6: Final answer
    x = 1,026,240.60

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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.