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Finding the Fourth Proportional to 645,525.44, 890,606.40 and 461,608.64

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Solution

The fourth proportional to 645,525.44, 890,606.40 and 461,608.64 is: 636,863.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,525.44 : 890,606.40 = 461,608.64 : x
  2. Step 2: Convert to fraction form
    645,525.44/890,606.40 = 461,608.64/x
  3. Step 3: Cross multiply
    645,525.44x = 890,606.40 × 461,608.64
  4. Step 4: Simplify right side
    645,525.44x = 411,111,609,079.30
  5. Step 5: Solve for x
    x = 411,111,609,079.30/645,525.44
  6. Step 6: Final answer
    x = 636,863.53

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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.