Home / 813,483.84-1,220,251.44-281,035.20

Finding the Fourth Proportional to 813,483.84, 1,220,251.44 and 281,035.20

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Solution

The fourth proportional to 813,483.84, 1,220,251.44 and 281,035.20 is: 421,561.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,483.84 : 1,220,251.44 = 281,035.20 : x
  2. Step 2: Convert to fraction form
    813,483.84/1,220,251.44 = 281,035.20/x
  3. Step 3: Cross multiply
    813,483.84x = 1,220,251.44 × 281,035.20
  4. Step 4: Simplify right side
    813,483.84x = 342,933,607,490.69
  5. Step 5: Solve for x
    x = 342,933,607,490.69/813,483.84
  6. Step 6: Final answer
    x = 421,561.67

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Double scale
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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.