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Finding the Fourth Proportional to 890,409.70, 1,228,763.01 and 482,522.86

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Solution

The fourth proportional to 890,409.70, 1,228,763.01 and 482,522.86 is: 665,880.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,409.70 : 1,228,763.01 = 482,522.86 : x
  2. Step 2: Convert to fraction form
    890,409.70/1,228,763.01 = 482,522.86/x
  3. Step 3: Cross multiply
    890,409.70x = 1,228,763.01 × 482,522.86
  4. Step 4: Simplify right side
    890,409.70x = 592,906,241,847.41
  5. Step 5: Solve for x
    x = 592,906,241,847.41/890,409.70
  6. Step 6: Final answer
    x = 665,880.26

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.