Home / 947,457.07-1,421,408.70-307,758.80

Finding the Fourth Proportional to 947,457.07, 1,421,408.70 and 307,758.80

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Solution

The fourth proportional to 947,457.07, 1,421,408.70 and 307,758.80 is: 461,710.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    947,457.07 : 1,421,408.70 = 307,758.80 : x
  2. Step 2: Convert to fraction form
    947,457.07/1,421,408.70 = 307,758.80/x
  3. Step 3: Cross multiply
    947,457.07x = 1,421,408.70 × 307,758.80
  4. Step 4: Simplify right side
    947,457.07x = 437,451,039,375.08
  5. Step 5: Solve for x
    x = 437,451,039,375.08/947,457.07
  6. Step 6: Final answer
    x = 461,710.67

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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.