Home / 699,072.60-1,048,608.90-447,130.20

Finding the Fourth Proportional to 699,072.60, 1,048,608.90 and 447,130.20

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Solution

The fourth proportional to 699,072.60, 1,048,608.90 and 447,130.20 is: 670,695.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,072.60 : 1,048,608.90 = 447,130.20 : x
  2. Step 2: Convert to fraction form
    699,072.60/1,048,608.90 = 447,130.20/x
  3. Step 3: Cross multiply
    699,072.60x = 1,048,608.90 × 447,130.20
  4. Step 4: Simplify right side
    699,072.60x = 468,864,707,178.78
  5. Step 5: Solve for x
    x = 468,864,707,178.78/699,072.60
  6. Step 6: Final answer
    x = 670,695.30

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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.