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Finding the Fourth Proportional to 890,709.70, 1,336,064.55 and 802,063.30

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Solution

The fourth proportional to 890,709.70, 1,336,064.55 and 802,063.30 is: 1,203,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,709.70 : 1,336,064.55 = 802,063.30 : x
  2. Step 2: Convert to fraction form
    890,709.70/1,336,064.55 = 802,063.30/x
  3. Step 3: Cross multiply
    890,709.70x = 1,336,064.55 × 802,063.30
  4. Step 4: Simplify right side
    890,709.70x = 1,071,608,341,986.02
  5. Step 5: Solve for x
    x = 1,071,608,341,986.02/890,709.70
  6. Step 6: Final answer
    x = 1,203,094.95

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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.