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Finding the Fourth Proportional to 645,541.44, 890,628.48 and 461,624.64

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Solution

The fourth proportional to 645,541.44, 890,628.48 and 461,624.64 is: 636,885.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,541.44 : 890,628.48 = 461,624.64 : x
  2. Step 2: Convert to fraction form
    645,541.44/890,628.48 = 461,624.64/x
  3. Step 3: Cross multiply
    645,541.44x = 890,628.48 × 461,624.64
  4. Step 4: Simplify right side
    645,541.44x = 411,136,051,453.75
  5. Step 5: Solve for x
    x = 411,136,051,453.75/645,541.44
  6. Step 6: Final answer
    x = 636,885.61

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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.