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Finding the Fourth Proportional to 862,082.58, 1,293,231.10 and 293,420

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Solution

The fourth proportional to 862,082.58, 1,293,231.10 and 293,420 is: 440,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,082.58 : 1,293,231.10 = 293,420 : x
  2. Step 2: Convert to fraction form
    862,082.58/1,293,231.10 = 293,420/x
  3. Step 3: Cross multiply
    862,082.58x = 1,293,231.10 × 293,420
  4. Step 4: Simplify right side
    862,082.58x = 379,459,869,362
  5. Step 5: Solve for x
    x = 379,459,869,362/862,082.58
  6. Step 6: Final answer
    x = 440,166.50

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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.