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Finding the Fourth Proportional to 407,861.70, 611,792.55 and 302,885.70

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Solution

The fourth proportional to 407,861.70, 611,792.55 and 302,885.70 is: 454,328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,861.70 : 611,792.55 = 302,885.70 : x
  2. Step 2: Convert to fraction form
    407,861.70/611,792.55 = 302,885.70/x
  3. Step 3: Cross multiply
    407,861.70x = 611,792.55 × 302,885.70
  4. Step 4: Simplify right side
    407,861.70x = 185,303,214,761.54
  5. Step 5: Solve for x
    x = 185,303,214,761.54/407,861.70
  6. Step 6: Final answer
    x = 454,328.55

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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.