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Finding the Fourth Proportional to 624,462.40, 936,693.60 and 447,315.40

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Solution

The fourth proportional to 624,462.40, 936,693.60 and 447,315.40 is: 670,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,462.40 : 936,693.60 = 447,315.40 : x
  2. Step 2: Convert to fraction form
    624,462.40/936,693.60 = 447,315.40/x
  3. Step 3: Cross multiply
    624,462.40x = 936,693.60 × 447,315.40
  4. Step 4: Simplify right side
    624,462.40x = 418,997,472,361.44
  5. Step 5: Solve for x
    x = 418,997,472,361.44/624,462.40
  6. Step 6: Final answer
    x = 670,973.10

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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.