Home / 696,048.40-1,044,072.60-428,942.80

Finding the Fourth Proportional to 696,048.40, 1,044,072.60 and 428,942.80

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Solution

The fourth proportional to 696,048.40, 1,044,072.60 and 428,942.80 is: 643,414.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,048.40 : 1,044,072.60 = 428,942.80 : x
  2. Step 2: Convert to fraction form
    696,048.40/1,044,072.60 = 428,942.80/x
  3. Step 3: Cross multiply
    696,048.40x = 1,044,072.60 × 428,942.80
  4. Step 4: Simplify right side
    696,048.40x = 447,847,424,447.28
  5. Step 5: Solve for x
    x = 447,847,424,447.28/696,048.40
  6. Step 6: Final answer
    x = 643,414.20

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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.