Home / 890,760.30-1,336,140.45-838,272.30

Finding the Fourth Proportional to 890,760.30, 1,336,140.45 and 838,272.30

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Solution

The fourth proportional to 890,760.30, 1,336,140.45 and 838,272.30 is: 1,257,408.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,760.30 : 1,336,140.45 = 838,272.30 : x
  2. Step 2: Convert to fraction form
    890,760.30/1,336,140.45 = 838,272.30/x
  3. Step 3: Cross multiply
    890,760.30x = 1,336,140.45 × 838,272.30
  4. Step 4: Simplify right side
    890,760.30x = 1,120,049,528,144.53
  5. Step 5: Solve for x
    x = 1,120,049,528,144.53/890,760.30
  6. Step 6: Final answer
    x = 1,257,408.45

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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.